BAPI or RFC Required to in ABAP webdynpro

Hi All,
I am new to the ABAP webdynpro. But i have experience in JAVA webdynpro. In JAVA WD , will access the back system functionality using RFC. But if comes to ABAP WD, is it required the RFC or BAPI?
If required why it is required? what is the advantage of using the BAPI or RFC in ABAP webdynpro? Because ABAP WD is running on the same system.
If not required ? what is the advantages of with out using BAPI's
Please let me know what are pros and cons for the using the BAPI or RFC in ABAP WD.
Regards
Vijay

Hi vijay,
Firstly welcome to our webdynpro learning world . :).  As you said you are already aware of the wendynpro java . Almost all same functinality it follows as webdynpro abap, the thing which it differs is
for java to interact with the RFC or the Bapis u need to interact with the other engine but since u are working into the same area line webdynpro abap need not calll any other specific engine as the RFC or teh BAPI s reside in the same workspace . Simple!.
Hope you are aware of the MVC functionality which our webdynpro follows so these bapis and RFCs firstly they are reusable and the other importance is generally we run our webdynpro applications by embeding our applications into portal so for that sake we make our (rfc and BAPI s )are remote enabled.
such that our webdynpro applications run .
Hope it would help you .
Happy learning.   Have a Good Day!
Regards,
Sana.

Similar Messages

  • How to call a RFC of a remote system from an ABAP webdynpro component

    Dear Experts,
    I am a newbie in ABAP Webdynpro.
    I am working on a requirement where I have a webdynpro component on ECC system.I need to call a RFC located on CRM system from my webdynpro component on the ECC system.
    How do I do that ?? Please help.
    Regards,
    Mamai.

    Calling RFC from some other system is same as local except the difference is that you have to give destination name while calling.
    And the regarding the method of calling it depends on your FM.
    if it is big RFC with complex structure, you can create the service call for it with destination given as RFC desitination.
    if it is simple straight forward RFC you can directly call it.
    for creating RFC service call call use this method
    1. Starting the Wizard
    To start the wizard, position the cursor on the Web Dynpro component to be edited in the object list at the left margin of the
    workbench window. Open its context menu and choose the entry Create->Service Call. The wizard is started and leads you
    through the creation process.
    Press Continue.
    2. Choice of Controller
    On the second dialog window of the wizard, you can choose whether the service call is to be embedded in an existing
    controller or whether a new controller is to be created for this purpose. Service calls can only always be embedded in
    global controllers u2013 that is, in the component controller or in additionally created custom controllers. It is not possible, to
    embed service calls in view controllers.
    a. Select radio button Use Existent Controller
    b. Do not change the default entry for component: <CC name>
    c. Enter for controller COMPONENTCONTROLLER
    d. Press Continue.
    3. Service Type and Service Selection
    a. You now select, which service type should be used for this service call. Select radio button Function Module. Fill the
    destination here. Press Continue.
    b. Select the service: for Function Module enter <RFC name>. Press Continue.
    4. The Required Methods and Context Elements
    On the two subsequent dialog windows, default values are listed for giving names to the context nodes and attributes
    required by the service call as well as to the required methods. The proposed names are based on the names of the
    embedded service, but you can change them as required. However, heed the respective notes in the corresponding dialog
    box.
    a. Adapt Context: Select from Nodes/Attributes . Press Continue.
    b. Specify Method Name: leave all entries as provided: Component:  Controller: COMPONENTCONTROLLER Method: EXCUTE_ Press Continue.
    5. Completing the Choice
    When you have confirmed the last dialog box, the generation is triggered. Afterwards you now have the required methods
    and contexts at your disposal for using them within your Web Dynpro component.
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  • Difference Between BAPI And RFC in ABAP

    Hi,
    i want to know difference between BAPI and RFC in SAP,
    can we call SAP GUI screen from NON SAP System Using BAPI.
    Reg,
    Hariharan

    Hi Ravishankar,
    The difference is not importat while you understand the concept.
    I think, RFC is the protocol for calling functions from external systems in R/3.
    I understand like BAPI a series of complet functions that SAP offers you for use and model a business use.
    But if I need program a function that can be called for external system i would call it RFC_NAME, because is a unique function that makes a single task.
    In other words, the difference i think is about work idea more than another thing.
    RFC
    A remote function call is a call to a function module running in a system different from the caller's. The remote function can also be called from within the same system (as a remote call).
    RFC consists of two interfaces : A calling interface for ABAP Programs and a calling interface for Non-SAP programs.
    The RFC Interface takes care of :-
    - Converting all parameter data to the representation needed in the remote system
    Calling the communication routines needed to talk to the remote system.
    Handling communications errors, and notifying the caller, if desired ( using EXCEPTIONS paramater of the CALL FUNCTION).
    BAPI
    BAPIs are standardized programming interfaces (methods) enabling external applications to access business processes and data in the R/3 System.
    BAPIs provide stable and standardized methods to achieve seamless integration between the R/3 System and external applications, legacy systems and add-ons.
    BAPIs are defined in the BOR(Business object repository) as methods of SAP business object types that carry out specific business functions.
    BAPIs are implemented as RFC-enabled function modules and are created in the Function Builder of the ABAP Workbench.
    The most critical difference btwn BAPI and FM is that BAPI can be wrapped in Business objects whereas RFC cant.
    BAPI are RFC enabled function modules. the difference between RFc and BAPI are business objects. You create business objects and those are then registered in your BOR (Business Object Repository) which can be accessed outside the SAP system by using some other applications (Non-SAP) such as VB or JAVA. in this case u only specify the business object and its method from external system in BAPI there is no direct system call. while RFC are direct system call Some BAPIs provide basic functions and can be used for most SAP business object types. These BAPIs should be implemented the same for all business object types. Standardized BAPIs are easier to use and prevent users having to deal with a number of different BAPIs. Whenever possible, a standardized BAPI must be used in preference to an individual BAPI.
    The following standardized BAPIs are provided:
    Reading instances of SAP business objects
    GetList ( ) With the BAPI GetList you can select a range of object key values, for example, company codes and material numbers.
    The BAPI GetList() is a class method.
    GetDetail() With the BAPI GetDetail() the details of an instance of a business object type are retrieved and returned to the calling program. The instance is identified via its key. The BAPI GetDetail() is an instance method. BAPIs that can create, change or delete instances of a business object type
    The following BAPIs of the same object type have to be programmed so that they can be called several times within one transaction. For example, if, after sales order 1 has been created, a second sales order 2 is created in the same transaction, the second BAPI call must not affect the consistency of the sales order 2. After completing the transaction with a COMMIT WORK, both the orders are saved consistently in the database.
    Create( ) and CreateFromData! ( )
    The BAPIs Create() and CreateFromData() create an instance of an SAP business object type, for example, a purchase order. These BAPIs are class methods.
    Change( )
    The BAPI Change() changes an existing instance of an SAP business object type, for example, a purchase order. The BAPI Change () is an instance method.
    Delete( ) and Undelete( ) The BAPI Delete() deletes an instance of an SAP business object type from the database or sets a deletion flag.
    The BAPI Undelete() removes a deletion flag. These BAPIs are instance methods.
    Cancel ( ) Unlike the BAPI Delete(), the BAPI Cancel() cancels an instance of a business object type. The instance to be cancelled remains in the database and an additional instance is created and this is the one that is actually canceled. The Cancel() BAPI is an instance method.
    Add<subobject> ( ) and Remove<subobject> ( ) The BAPI Add<subobject> adds a subobject to an existing object inst! ance and the BAPI and Remove<subobject> removes a subobject from an object instance. These BAPIs are instance methods.
    Check these Links out
    http://searchsap.techtarget.com/ateQuestionNResponse/0,289625,sid21_cid558752_tax293481,00.html
    http://www.sap-img.com/abap/interview-question-on-bapi-rfc-abap-objects-tables.htm
    http://www.sap-img.com/fu033.htm
    http://www.sap-img.com/abap/ale-bapi.htm
    Refer following SDN threads:
    Diff. Between BAPI and RFC
    Re: BAPI and RFC
    Hope this resolves your query.
    Reward all the helpful answers.
    Regards

  • BAPI with RFC enables creation and mapping required settings

    Dear Experts,
    My client is having their old legacy system in .Net .
    Now their requirement is whenever they will create Vendor in their system that created vendor entry should be created automatically in SAP.
    I dont know about BAPI and RFC and how it will work.
    I will try to go up to the creation of BAPI with RFC enabled.
    But to map their requirement what Steps and Setting need to be done in SAP as well as in their Legacy system (.Net).
    Please guide me to solve the issue.
    Regards,
    Sanket.

    closed

  • Models in Abap Webdynpro.

    Hi All,
    I am a Java guy having knowledge in Java webdynpro, it happend for me to get into ABAP webdynpro just had a small query here.
    How does models functionality work in ABAp Webdynpro.
    How do we access RFC, BAPI, web services, EJBs etc in ABAP web dynpro.
    Thanks in Advance,
    Sai Krishna.

    Hi Sai,
    Model is nothing but the business logic similar to the Java webdynpro . I guess you have seen those Hook methods like WD_doinit, WD DOmodifyView some standard default methods which we get according to the requirement we write our code as and where we want . One basic thing is u must be aware of the Context which is the heart of the webdynpro abap applications the interaction between the screen and the database is done by this .
    Let me take a small example of how are we going to use the RFC or Bapis.
    EG:
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    SO step1. Intially we desing the screen UI elements , create a Node for the input field with cardinality (0:1). and create another node for the table binding with cardinality as (0:n).then bind the values of the screen .
    step2:  Now since after giving the value in the input filed we want to fetch the data. On action of the Button or on enter of the input filed we need to write our code.
    That means here our bapi or RFC comes into picture . what we need to do is get_attribute of the input field and call that RFC in import values pass the get_attribute value and see that it returns some table
    say lt_table.
    Now when you debug you can see the table values which we need to bind it to the table.
    lo_nd_table->bind_table( lt_table ).
    This will fetch the table values depending upon the input field values you giv .
    Hope it is clear and helpful.
    Have A GoodDay:)
    Regards,
    Sana.

  • Difference betrween BAPI and RFC

    Hi All
              Can anyone tell me the difference between BAPI and RFC.
    I am unable to find it out ,except one,ie  BAPI is based on object oriented concept .
    please justify your answers with real scenerios.

    Remote Function Call:
    RFC is an SAP interface protocol. Based on CPI-C, it considerably simplifies the programming of communication processes between systems.
    RFCs enable you to call and execute predefined functions in a remote system - or even in the same system.
    RFCs manage the communication process, parameter transfer and error handling.
    http://help.sap.com/saphelp_47x200/helpdata/en/22/042860488911d189490000e829fbbd/frameset.htm.
    BAPI
    BAPI stands for Business API(Application Program Interface).
    A BAPI is remotely enabled function module
    ie it can be invoked from remote programs like standalone JAVA programs, web interface etc..
    You can make your function module remotely enabled in attributes of Function module but
    A BAPI are standard SAP function modules provided by SAP for remote access.
    Also they are part of Businees Objest Repository(BOR).
    BAPI are RFC enabled function modules. the difference between RFc and BAPI are business objects.
    You create business objects and those are then registered in your BOR (Business Object Repository)
    which can be accessed outside the SAP system by using some other applications (Non-SAP) such as VB or JAVA.
    In this case u only specify the business object and its method from external system
    in BAPI there is no direct system call. while RFC are direct system call.
    Some BAPIs provide basic functions and can be used for most SAP business object types.
    These BAPIs should be implemented the same for all business object types.
    Standardized BAPIs are easier to use and prevent users having to deal with a number of different BAPIs.
    Whenever possible, a standardized BAPI must be used in preference to an individual BAPI.
    Difference Between BAPI and RFC
    What is the main difference between BAPI and RFC and difference between BAPI and BDC?
    BAPI is used only when it is available for the particular transaction like Delivery Sales order. but BDC can be used for any
    transaction which have screen and fields.
    BAPI is directly updated the database instead BDC run through the screen flow.
    So BAPI can't handle all the flow logic checking and enhancement put by programmer to faciliate the user requirement.
    Difference between BAPI and BDC:
    BAPI is a higher end usage for tranfering the data from SAP to non-SAP and vice-versa. for ex: if we are using VB application,where in that we want to connect to SAP and retireve the data,and then change and update the data in SAP for that purpose we can use that.
    Apart from that, we can also use it for Uploading/Downloading the data from SAP to Non-SAP like BDC, provided we have an existing BAPI for that.
    BAPI function modules will also do all the checks required for data integrity like Transactions for BDC.
    There is one more advantage using BAPI instead of BDC. When we go for upgradation, there might be pozzibility to change the screen elements for transactions depending on the requirement. In that case,our BDC pgm may or may not work (depending on the screen changes they have made). Unless and until we prepare new BDC we cant use the old BDC pgm. But in BAPI, SAP promises that they are going to keep the old BAPI and for new functionality they will provide an upgraded BAPI. Until we write a new BAPI pgm, we can use the exisitng BAPI pgm.
    BAPI are RFC enabled function modules. the difference between RFc and BAPI are business objects. You create business objects and those are then registered in your BOR (Business Object Repository) which can be accessed outside the SAP system by using some other applications (Non-SAP) such as VB or JAVA.
    In this case you only specify the business object and its method from external system in BAPI there is no direct system call. while RFC are direct system call Some BAPIs provide basic functions and can be used for most SAP business object types. These BAPIs should be implemented the same for all business object types. Standardized BAPIs are easier to use and prevent users having to deal with a number of different BAPIs. Whenever possible, a standardized BAPI must be used in preference to an individual BAPI. It is not possible to connect SAP to Non-SAP systems to retrieve data using RFC alone. RFC can acces the SAP from outside only through BAPI and same is for vice versa access.
    RFC is the protocol used by SAP for remote communication, that is, for communications between remote (independent) systems. RFC is used for communications between two independent SAP systems, or for communications between an SAP system and a non-SAP system, such as an external application. It can also be used for communications between modules on the same system. Using the RFC interfaces you can extend the functionality of R/3 applications from an external program.
    BAPI-step by step
    http://www.sapgenie.com/abap/bapi/example.htm
    list of all bapis
    http://www.planetsap.com/LIST_ALL_BAPIs.htm
    for BAPI's
    http://www.sappoint.com/abap/bapiintro.pdf
    http://www.sappoint.com/abap/bapiprg.pdf
    http://www.sappoint.com/abap/bapiactx.pdf
    http://www.sappoint.com/abap/bapilst.pdf
    http://www.sappoint.com/abap/bapiexer.pdf
    http://service.sap.com/ale
    http://service.sap.com/bapi
    http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCMIDAPII/CABFAAPIINTRO.pdf
    http://help.sap.com/printdocu/core/Print46c/en/data/pdf/CABFABAPIREF/CABFABAPIPG.pdf
    http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCFESDE8/BCFESDE8.pdf
    http://www.planetsap.com/Bapi_main_page.htm
    http://www.topxml.com/sap/sap_idoc_xml.asp
    http://www.sapdevelopment.co.uk/
    http://www.sapdevelopment.co.uk/java/jco/bapi_jco.pdf
    also refer these threads
    What is the difference between RFC and BAPI?.
    whats difference between rfc and bapi?
    difference between rfc & bapi
    difference between RFC and BAPi
    Difference between BAPI and RFC?
    also chk this
    http://www.sap-img.com/abap/interview-question-on-bapi-rfc-abap-objects-tables.htm
    regards,
    srinivas
    <b>*reward for useful answers*</b>

  • ABAP webdynpro or webservices

    hi all,
    I have an question. I have a system where i can use the ABAP webservices or the ABAP webdynpro to send data to a flex application.
    But which of those 2 is the best solution? Or doesn't it matter which one i choose?
    Do you have found some (dis)advantages for the solution with the webservices or do you have found some (dis)advanteges found with the solution with the ABAP webdynpro?
    Kind regards,
    Anton Pierhagen

    Hi Anton,
    If comparison done between Web Dynpro having Flash Island for Flex components and Independent Flex application communicating with R/3 via RFCs then in many aspects Web Dynpro is better option.
    If backend is R/3 then anyways you have all required infrastructure in place no need of any other servers in case of WD. But if you go for 2nd option then may be for hosting swf files you need WAS or any other server.
    There might be some cases where you need to fetch lots of data from DB then using SOAP way i.e. RFCs could give you time-out during data retrival at Flex frontend ( very rare case but there is possibility).
    You can use your WD to handle all business logic and Flex components only for presentations like charts, interactive components etc.
    One majot advantage of WD will be security aspect which can be handle very easily ( even with Single-Sign-On) whereas in independent Flex application you might end-up with extra security inception other than basic authentication of RFCs on load.
    these are few differences out of many others which i can tell you.
    Though both options you are thinking are good and feasible but i would suggest Web Dynpro. (Anyways being SAP Partner also we should promote SAP investments )
    Regards,
    Vivek
    Edited by: vivek khedekar on Sep 23, 2010 6:08 AM

  • Advantages of ABAP Webdynpros over BSP??

    Hi,
    We are currently in ECC6.0. Is ABAP Webdynpro advantageous over BSP for any UI development ECC6.0 onwards in general?
    Specific requirement for which BSP is needed - we need a single application for a Help Desk team to handle calls from customers. The application will have multiple screens with data flowing into this application from multiple sources.
    Need inputs on the above....
    TIA,
    Regards
    Deepthi

    >Both webdynpro and BSP call ABAP function modules from HTTP. The BSP interface does this via programming in SE80, the webdynpro does this via programming in the Java development workbench. The BSP enters the SAP systenm via the ICM and is 'routed' to ICF where call are then made to executre ABAP (a good example is we use SOAP BSP's). Webdynpro routes via the ICM to the Java engine which then executes the Java to call the functions via an RFC interface called a JCo connection.
    There are many incorrect statements in your posting.  You appear to be compairing BSP to Web Dynpro Java - not Web Dynpro ABAP. Why would you do this in a Web Dynpro ABAP forum posting?  Of course everything you stated about Web Dynpro running on the Java engine and using JCo and being programmed in the Java development workbench is totally wrong if you are comparing to Web Dynpro ABAP.
    Here is the explaination of the differences from the SAP Press Book: Next Generation ABAP development (page 303):
    Web Dynpro ABAP is SAPu2019s new UI strategy, which was introduced in SAP
    NetWeaver 7.0. It is based on the Model View Controller (MVC) paradigm
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    easily, without ever having to deal with the inner coding of the user interface
    elements.
    The Web Dynpro ABAP framework provides a WYSIWYG view editor (What
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    This is not the case when working with Business Server Pages (BSP),
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    The Web Dynpro framework approach can be viewed in a number of ways.
    If a developer is not proficient in HTML or JavaScript, the Web Dynpro
    ABAP tool looks pretty good. He doesnu2019t have to worry about coding the UI
    and he can focus more on the business application logic. On the other hand,
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    across all applications that leverage this tool.
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    Web Dynpro is not tied to just HTML and JavaScript as its output medium.
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    have to recreate your applications to take advantage of it. Already you can see examples of a smart client and Adobe Flex based rendering engines for Web Dynpro. Switching to these alternative presentation tools requires no coding changes within the applications themselves.

  • Advantage BAPI over RFC

    Hi,
    I like know the difference between BAPI over RFC. I know this question answered several times thru this forum. But still i have not clear about the advantage BAPI over RFc.
    All RFC-enabled function modules can be accessed from the outside, irrespective of whether it is a standard BAPI, a user-defined BAPI or a "normal" RFC function module.
    I like to know what will be the real advantage to create custom BAPI instead of RFC function module. I know the BAPI will create a BOR. in that case what will be the advantage of an BOR over RFC call. I neither see a technical nor a business advantage having a user-defined BAPI instead of a normal RFC function module.
    Anybody please give some info over BAPI over RFC.
    Thanks for your replies.
    aRs

    Hi,
    BAPI are RFC enabled function modules.
    The difference between RFC and BAPI are business objects. You create business objects and those are then registered in your BOR (Business Object Repository) which can be accessed outside the SAP system by using some other applications (Non-SAP) such as VB or JAVA. In this case u only specify the business object and its method from external system. in BAPI there is no direct system call. While RFC are direct system call Some BAPIs provide basic functions and can be used for most SAP business object types. These BAPIs should be implemented the same for all business object types. Standardized BAPIs are easier to use and prevent users having to deal with a number of different BAPIs. Whenever possible, a standardized BAPI must be used in preference to an individual BAPI.
    *The advantage of using BAPIs over using RFCs is that using BAPIs requires no ABAP programming knowledge. You use BAPIs from standard programming languages such as C++ and Java. *
    Check these links too..
    http://help.sap.com/saphelp_46c/helpdata/de/cf/8ccab761ea11d2804a00c04fada2a1/content.htm
    Difference between Function Modules, RFCs and BAPIs...
    Hope it is useful.
    Regards,
    Kumar
    Message was edited by:
            kumar kk

  • ABAP Webdynpro Development - Script Error when Accessing Visual Elements

    I am encountering a strange error at my client .  I can't use the Abap Webdynpro visual elements to build views .
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    Line : 1
    Char : 25
    Error : Object Required
    Code: 0
    URL : http://hdrerpdev05.bchydro.bc.ca:8100/sap/bc/wdvd/toolbar.html?_vdrespkey=4KE8FGJO3P88DO8K5XCEYHTEA&_vdframe=toolbar&usedynp=&usepat=&sap-client=100
    Anybody had had the same kind of error before ^^????
    Thanks and Best Regards !

    Hi,
    we are getting the some what related errors in SE80 -> Web Dynpro Layout
    An Error has occured in the script on this page .
    Line : 1
    Char : 1
    Error : Object Expected
    Code: 0
    URL : http://<FQDN>:8000/sap/bc/wdvd/painting.html?_vdrespkey=4KZ4LYLFQA2I7X53H3CRICKFC&_vdframe=painting&sap-client=230
    An Error has occured in the script on this page .
    Line : 110
    Char : 2
    Error : Could not complete the operation due to error 80020101
    Code: 0
    URL : http://<FQDN>:8000/sap/bc/wdvd?_vdrespkey=4KZ4LYLFQA2I7X53H3CRICKFC&_vdframe=no_add_ui_lib&sap-client=230
    Recently, we have upgraded our ERP system (SAP ECC 6.0 SPS17) with EHP4 SPS8. SAP_BASIS and SAP_ABA patch level same on 701_0008.
    FQDN is mantianed at icm/host_name_full parameter in system as well as in /etc/hosts file with associated system IP address.
    As suggested by  Ted Dinh,  we do not find any duplicate MIME files in our MIME Repository (SE80) and we cleared/invalidated  ICM cache many times in problem analysis.
    As suggested by  Thierno Diarra , in our affected system domain WDY_MD_UI_ELEMENT_CATEGORY is well maintained in value ranges.
    We have raised SAP OSS Message for the same, they told us to check dns server connectivity/settings with the affected system. we did the suggested DNS settings in affected system. But  still the same error message is occuring. They have suggested same sap notes like #979039 and #1009930 & #1483210 , but all the corrections/suggections/SICF service status as mentioned, are found OK in our system.
    Regards,
    Bhavik G. Shroff

  • ABAP webdynpro app not redirecting using Outbound plug in portal

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    SAP ECC system is having a webispatcher and the application should be accessed using webdipatcher only i.e. ECC should not be called directly.
    SSL has been configured b/w ECC and webdipatcher.
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    Regards
    Deepak

    Hi,
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    How to secure WDA over an external facing portal
    WebDynpro ABAP and Portal Navigation
    WebDynpro ABAP and Portal Navigation problem
    Please check for the portal eventing between the applications.
    Regards,
    Lekha

  • Calling an ABAP WebDynpro Popup from a BSP view

    I need to know if the following is possible.
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