BPM Message Flow

Hello,
I am aware that we use concept of Message Flows for communication between activities in two different pools.
Now let me say i have 5 activities and Pool A and 5 in Pool B. Now message flow is generic in between pools. How do i define that one message flow is for one specific activity.
I am new to BPM and may sound stupid too. But how does the above thing work? Guys help me out.

Hi Yogesh,
In SAP NetWeaver BPM on CE 7.11 only one so called active pool is supported. Other pools are for documentation purposes (in ordeer to outline the context the process is running in).
In case the other 4 activities should also particiapte in the process it would be necessary to split the pools into several lanes in order to define different responsibilities.
Hope that helps,
Martin

Similar Messages

BPM Message Flow Question

My scenario involves a BPM, the BPM retrieves via Receiver JDBC(Sync Call) some data using two fields of the initial message, the response message from JDBC have one field I want to map that field to the initial message in order to keep in one message all fields, my question is the content of the initial field will be lost by the moment of response mapping?

Hi Ruben,
You can make use of Container Variables and then you can use it . If you want to append assign the fields into different messages
With the help of Container operation, you can assign the values.
http://help.sap.com/saphelp_nw2004s/helpdata/en/59/e1283f2bbad036e10000000a114084/frameset.htm
Hope it helps,
Regards,
Moorthy

BDOC message flow and its architecture

Hi Expert,
It can be a simple question but i have a doubt regarding the flow of messages using SAP CRM middleware.
The scenario is like:
1. Message flows from ECC to CRM through a BDoc. (It can be opposite way also)
2. The BDoc fails in CRM due to some data issue.
3. A BDoc message id is generated.
4.Now the data is corrected in ECC and initial load was triggered.
5.The messages are flowing correctly.
So my doubt is:
1.What will happen to the old BDoc?
2. Do the initial or delta load processes the messages with new BDoc ID or through the old BDoc ID?
3. If the messages are processed through new BDoc id, can the old BDocs be deleted?
Please help me understand this concepts of BDocs and please provide me to some study material to get more undertsanding of the BDOC message flow architecture.
thanks,
Vicky

Hello Vicky,
i think I understand exactly what your confusion is all about.
1.What will happen to the old BDoc?
The old Bdoc will remain in error state until it is archived or set to processed state.
2. Do the initial or delta load processes the messages with new BDoc ID or through the old BDoc ID?
It will be a separate BDoc with a new BDocId. If you get an Error in SMW01 this is beyond the queueing, so later Messages will not get queued behind your faulty bdoc. They will also not "update" your BDoc in any way. Later BDocs will Bypass a bdoc in error state and update your object in CRM if the error in data has been solved in ERP before. If the data error is not corrected, you will get a second failed bdoc.
3. If the messages are processed through new BDoc id, can the old BDocs be deleted?
Best practise for the Bdoc with error would be to set it to processed state. That way there is no way that Bdoc can be processed afterwards. The BDoc will then be archived with the next run.
Best regards,
Lutz

Goods Receipt in PO AND Message Flow Update in Inb. Delivery using WMMBXY

Dear All
This question is related to a previous one posted in:
Post Goods Receipt for Inbound Delivery using WHSCON IDoc
We have a stock transport order (PO) for which we create an inbound delivery. The despatch advice (EANCOM D96A DESADV) is sent to our logistics partner who returns the same EDI message with the received quantities (goods receipt).
Using the inbound IDoc WMMBID02.WMMBXY I have successfully posted the goods receipt for the original PO. However, the message flow in the delivery is not updated. When we post the goods receipt (transaction MIGO) in dialog for the delivery we see the GR in the message flow.
I have used the following values with the segments of WMMBID02.WMMBXY (SAP release = 4.6c):
E1MBXYH:
Reference = <number of delivery>
Transaction code = 'MIGO'
E1MBXYI:
Movement type = '101'
Purchasing doc. = <number of PO>
Item = <Item no. in PO>
Movement ind. = 'B'
I am not sure about the correct movement indicator but failed when using a value different from 'B':
The movement indicator is derived from the transaction code.
Permitted values:
'' Goods movement w/o reference
'B' Goods movement for purchase order
'F' Goods movement for production order
'L' Goods movement for delivery note
'K' Goods movement for kanban requirement (WM - internal only)
'O' Subsequent adjustment of "material-provided" consumption
'W' Subsequent adjustment of proportion/product unit material
QUESTION: Does anybody know if and how inbound WMMBID02.WMMBXY can be used for both the goods receipt in the purchase order AND the message flow in the inbound delivery?
Regards
Uwe

Hello Everybody
My initial mapping of the WMMBXY IDoc proved to be correct.
For more details please refer to:
[Note 833603 - EDI: Goods receipt for stock transport order|https://service.sap.com/sap/support/notes/833603]
Regards
Uwe

ON PREM Outbound emails showing in dummy non-configured office 365 account message flow trace

Dear Community,
We have an on-prem exchange 2013 server and an office 365 account which is completly standalone.
Whilst the office 365 account is standalone, it does feature the email address we use for on-prem (Ie. the domain name in office 365 account is not active for any office 365 services however has passed ownership verification thus it's just sitting there)
We DON'T use EOP nor do we have any connector rules on our on-prem system that go to office 365 however when I randomly went into the 'Message Flow Trace' section in our office 365 account, there is recorded outbound mail which was sent from our On-prem
server.
The ONLY mail that was recorded in the message Trace in Office 365 was emails we had sent from On-prem to other office 365 accounts (For example btconnect.com, and some of our clients whom also use office 365) .
How is office 365 picking up mail we've sent from our On-Prem server? Is there integration out of the box in exchange 2013 which auto interfaces with office 365? What on earth has happened here?
I'm really confused.
-------- For troubleshooting purposes...
Headers in the email which arrived in my personal office 365 account from the ON-PREM SERVER
Received: from AMSPR05MB065.eurprd05.prod.outlook.com (10.242.89.142) by
DBXPR05MB079.eurprd05.prod.outlook.com (10.242.138.22) with Microsoft SMTP
Server (TLS) id 15.1.93.16 via Mailbox Transport; Thu, 5 Mar 2015 16:16:31
+0000
Received: from DBXPR05CA0014.eurprd05.prod.outlook.com (10.255.178.14) by
AMSPR05MB065.eurprd05.prod.outlook.com (10.242.89.142) with Microsoft SMTP
Server (TLS) id 15.1.99.14; Thu, 5 Mar 2015 16:16:30 +0000
Received: from DB3FFO11FD028.protection.gbl (2a01:111:f400:7e04::145) by
DBXPR05CA0014.outlook.office365.com (2a01:111:e400:9434::14) with Microsoft
SMTP Server (TLS) id 15.1.106.15 via Frontend Transport; Thu, 5 Mar 2015
16:16:29 +0000
Received: from emea01-am1-obe.outbound.protection.outlook.com (157.56.112.128)
by DB3FFO11FD028.mail.protection.outlook.com (10.47.217.59) with Microsoft
SMTP Server (TLS) id 15.1.99.6 via Frontend Transport; Thu, 5 Mar 2015
16:16:28 +0000
Received: from DB4PR04CA0010.eurprd04.prod.outlook.com (25.160.41.20) by
DB3PR04MB236.eurprd04.prod.outlook.com (10.242.130.24) with Microsoft SMTP
Server (TLS) id 15.1.99.14; Thu, 5 Mar 2015 16:16:26 +0000
Received: from DB3FFO11FD040.protection.gbl (2a01:111:f400:7e04::184) by
DB4PR04CA0010.outlook.office365.com (2a01:111:e400:9852::20) with Microsoft
SMTP Server (TLS) id 15.1.106.15 via Frontend Transport; Thu, 5 Mar 2015
16:16:26 +0000
Received: from mail.localdomainhere (<IP OF OUR ON-PREM SERVER GOES HERE>) by
DB3FFO11FD040.mail.protection.outlook.com (10.47.217.71) with Microsoft SMTP
Server (TLS) id 15.1.99.6 via Frontend Transport; Thu, 5 Mar 2015 16:16:25
+0000
Received: from INT-EX-01.localdomainhere (192.168.142.20) by
INT-EX-01.localdomainhere (192.168.142.20) with Microsoft SMTP Server (TLS) id
15.0.913.22; Thu, 5 Mar 2015 16:15:55 +0000
Received: from INT-EX-01.localdomainhere ([fe80::aca4:88cf:3eaf:57dc]) by
INT-EX-01.localdomainhere ([fe80::aca4:88cf:3eaf:57dc%12]) with mapi id
15.00.0913.011; Thu, 5 Mar 2015 16:15:55 +0000
From: Jake Ives <[email protected]>
To: Jake Ives <[email protected]>
Subject: Test01
Thread-Topic: Test01
Thread-Index: AdBXX6dyI5u99OGoSKmXroKKyMA3Tg==
Date: Thu, 5 Mar 2015 16:15:54 +0000
Message-ID: <[email protected]>
Accept-Language: en-US, en-GB
Content-Language: en-US
X-MS-Has-Attach: yes
X-MS-TNEF-Correlator:
x-originating-ip: [192.168.142.73]
Content-Type: multipart/related;
boundary="_004_081f834d85b7436193fa887613b9dac7INTEX01localdomainhere_";
type="multipart/alternative"
MIME-Version: 1.0
Return-Path:
[email protected]
X-EOPAttributedMessage: 1
Received-SPF: Pass (protection.outlook.com: domain of domain.com
designates <IP OF ONPREM SERVER HERE> as permitted sender)
receiver=protection.outlook.com; client-ip=<IP OF OUR ON-PREM SERVER GOES HERE;
helo=mail.domain.co.uk;
Authentication-Results: spf=pass (sender IP is <IP OF OUR ON-PREM SERVER GOES HERE>)
[email protected]; ives.gb.net; dkim=none (message not
signed) header.d=none;ives.gb.net; dkim=none (message not signed)
header.d=none;ives.gb.net; dmarc=none action=none header.from=domain.com;
X-Forefront-Antispam-Report-Untrusted: CIP:<IP OF ON PREM SERVER HERE>;CTRY:GB;IPV:NLI;EFV:NLI;BMV:0;SFV:NSPM;SFS:(10019020)(438002)(189002)(199003)(71364002)(87936001)(2656002)(98436002)(92726002)(102836002)(108616004)(19625215002)(19618635001)(512954002)(92566002)(229853001)(107886001)(66926002)(18206015028)(84326002)(16796002)(19300405004)(450100001)(19580395003)(2900100001)(77156002)(15974865002)(62966003)(5250100002)(5310100001)(99936001)(15395725005)(16236675004)(110136001)(17760045003)(67866002)(86362001)(19617315012)(19627595001)(15975445007)(19580405001)(54356999)(22756005)(50986999)(6806004)(46102003)(74482002)(106466001)(33646002)(7099025)(24736002)(15669805003);DIR:OUT;SFP:1102;SCL:1;SRVR:DB3PR04MB236;H:mail.domain.co.uk;FPR:;SPF:Pass;MLV:ovrnspm;MX:1;A:1;PTR:mail.domain.co.uk;LANG:en;
X-Microsoft-Antispam: UriScan:;BCL:0;PCL:0;RULEID:;SRVR:DB3PR04MB236;UriScan:;BCL:0;PCL:0;RULEID:;SRVR:AMSPR05MB065;
X-Microsoft-Antispam-PRVS: <[email protected]outlook.com>
X-Exchange-Antispam-Report-Test: UriScan:;UriScan:;
X-Exchange-Antispam-Report-CFA-Test: BCL:0;PCL:0;RULEID:(601004)(5001007)(5005006);SRVR:DB3PR04MB236;BCL:0;PCL:0;RULEID:;SRVR:DB3PR04MB236;BCL:0;PCL:0;RULEID:(601004);SRVR:AMSPR05MB065;BCL:0;PCL:0;RULEID:;SRVR:AMSPR05MB065;
X-Forefront-PRVS: 05066DEDBB
X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB3PR04MB236
X-MS-Exchange-Organization-MessageDirectionality: Incoming
Received-SPF: Fail (protection.outlook.com: domain of domain.com does not
designate 157.56.112.128 as permitted sender)
receiver=protection.outlook.com; client-ip=157.56.112.128;
helo=emea01-am1-obe.outbound.protection.outlook.com;
Authentication-Results: spf=fail (sender IP is 157.56.112.128)
[email protected];
X-Forefront-Antispam-Report: CIP:157.56.112.128;CTRY:US;IPV:NLI;IPV:NLI;EFV:NLI;SFV:NSPM;SFS:(339900001)(489007)(189002)(71364002)(199003)(102836002)(92726002)(15975445007)(92566002)(17760045003)(62966003)(106466001)(15395725005)(16236675004)(77156002)(110136001)(107886001)(450100001)(5310100001)(229853001)(22756005)(98436002)(2900100001)(5250100002)(19625215002)(66926002)(99936001)(33646002)(15974865002)(19617315012)(19627595001)(67866002)(54356999)(108616004)(19300405004)(19618635001)(87836001)(2656002)(18206015028)(85426001)(512954002)(86362001)(6806004)(46102003)(74482002)(84326002)(19580395003)(50986999)(19580405001)(7099025)(24736002)(15669805003);DIR:INB;SFP:;SCL:1;SRVR:AMSPR05MB065;H:emea01-am1-obe.outbound.protection.outlook.com;FPR:;SPF:Fail;MLV:ovrnspm;MX:1;A:1;PTR:mail-am1on0128.outbound.protection.outlook.com;LANG:en;
X-MS-Exchange-Transport-CrossTenantHeadersStripped: DB3FFO11FD028.protection.gbl
X-MS-Exchange-Transport-CrossTenantHeadersPromoted: DB3FFO11FD028.protection.gbl
X-MS-Exchange-Organization-Network-Message-Id: 927151e3-02c4-4c46-5539-08d22576df82
X-MS-Exchange-Organization-AVStamp-Service: 1.0
X-MS-Exchange-Organization-SCL: 1
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Mar 2015 16:16:28.9728
(UTC)
X-MS-Exchange-CrossTenant-Id: cd52bfe2-da2e-446d-b8f1-e78db861d489
X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=bfa61dad-1543-4f3b-8075-03498e9f4fcb;Ip=[IP OF ON PREM SERVER HERE]
X-MS-Exchange-CrossTenant-FromEntityHeader: Internet
X-MS-Exchange-Transport-CrossTenantHeadersStamped: AMSPR05MB065
X-MS-Exchange-Organization-AuthSource: DB3FFO11FD028.protection.gbl
X-MS-Exchange-Organization-AuthAs: Anonymous
X-MS-Exchange-Transport-EndToEndLatency: 00:00:03.5565465

MX records are not set to office 365, the MX is pointing directly to the on-prem exchange server.
The problem is; Office 365 Mail Delivery Trace is displaying mail we've sent via our On-Prem server - We are having trouble understanding why this is happening.
To clarify, the message tracer in Office 365 is displaying outbound mail (Which for example, a user has sent out from their outlook) BUT only outbound mail which is being sent to other office 365 users.
We do not have mail on office 365, only on-premise hence the reason why we are flabbergasted to why the mail we are sending out would be displaying on the office 365 message tracer.
To further clarify, we are only seeing addresses in the office 365 message trace which belong to recipients whom use office 365 for their mail.
Hope this makes sense.
getting messy O365 users to another O365 you mean?
You mentioned if they send email using their MS Outlook Client.
I'd suggest you to send another email to the same recipient but using OWA
There may have been an office 365 connector in Outlook.
Where Technology Meets Talent

Xslt in message flow

hello,
i have an XSLT document and i want to use it to make a transformation in the response message flow of my proxy service.
i call a webservice through business service but i dont know which action,in the "response actions", corresponds to making an XSL transformation.
I tried "replace" without success, the others actions seem not to be for transformation.
in the xquery expression editor, i put my XSLT resource to execute.
in "2. bind input", i dont know exactly what to put, there isn't any explication for "2. bind input" in the edocs.
and for "3. bind variables", i have nothing (no variables have been found)
could someone indicate me how to configure and use the result of my xslt in a message flow ?
thank you very much.

We built a custom service and invoked it asynchronously (non-blocking) using the Publish Action (with QoS as BestEffort) in the different places wherever we needed the audit functionality.
And this service would do its work on the background as a part of a separate thread, thereby not impacting the actual service that was implementing the business logic.
This is not optimal because there is still some time consumed for the publish action (though it is less) in the actual service with the business logic. But atleast this did allow us to overcome the limitation of the handlers to some extent.
I generally do not prefer to use java callouts as the prerequisite is that the methods exposed need to be static, which might create some contention when many threads try to invoke the same java callout methods at the same time.
Thanks,
Patrick

Replacing default namespace in OSB message flow

I'm in the process of setting up a simple OSB proxy and could use some help figuring out how to change a default namespace in the response from the business service.
The proxy and business service use different namespaces which we'll call "http://foo.com/namespace/proxy" and "http://foo.com/namespace/business". In my routing request message flow, the contents of $body look like this and I'm able to use a Rename action with XQuery expression "./sof:*" to change "http://foo.com/namespace/proxy" to "http://foo.com/namespace/business":
<sof:Execute xmlns:sof="http://foo.com/namespace/proxy">
<sof:adminName>MyAdaptor</sof:adminName>
<sof:request>
[escaped payload omitted]
</sof:request>
</sof:Execute>
This works fine, but in the response message flow, I need to revert the namespace and am having difficulty because the response uses a default namespace instead of using a prefix:
<ExecuteResponse xmlns="http://foo.com/namespace/business">
<ExecuteResult>
[escaped payload omitted]
</ExecuteResult>
</ExecuteResponse>
If I define a prefix P2L in the expression editor to correspond to "http://foo.com/namespace/business", I'm able to reference the ExecuteResponse element as "./P2L:ExecuteResponse", but then I get stuck.
If I try use a Rename action to change the namespace for "./P2L:*", only the ExecuteResponse element is renamed to <sof:ExecutResponse xmlns:sof="http://foo.com/namespace/proxy">. Upstream in the calling application, there's an XML stream reader exception because (I assume) ExecuteResult is not found and parsed.
I also tried using a Replace action against "./P2L:ExecuteResponse/@xmlns" to replace its contents with "http://foo.com/namespace/proxy". I also tried "./P2L:ExecuteResponse/@P2L:xmlns". Neither worked.
Can anyone tell me what I'm doing wrong, or suggest a different approach? Assume that changing the calling application or business service is not an option.
Thanks!

>
If I define a prefix P2L in the expression editor to correspond to "http://foo.com/namespace/business", I'm able to reference the ExecuteResponse element as "./P2L:ExecuteResponse", but then I get stuck.
If I try use a Rename action to change the namespace for "./P2L:*", only the ExecuteResponse element is renamed to <sof:ExecutResponse xmlns:sof="http://foo.com/namespace/proxy">. Upstream in the calling application, there's an XML stream reader exception because (I assume) ExecuteResult is not found and parsed.
>
You pattern "./P2L:\*" matches just one element so it's ok that the payload's namespace wasn't touched. If you want to rename namespace for all elements try "//P2L:*". However, I'm not sure whether this is what you want. Try do describe what you do, what you want and what you get instead.
>
I also tried using a Replace action against "./P2L:ExecuteResponse/@xmlns" to replace its contents with "http://foo.com/namespace/proxy". I also tried "./P2L:ExecuteResponse/@P2L:xmlns". Neither worked.
>
I think it's not a good approach to replace content of xmlns as this attribute is not a common xml attribute.

Loop in message flow found

Hi all
I created a idoc to abap proxy for the xi adapter i used http destination with my destination defined in sm59.
In sxbm_moni i get the error:
LOOP_IN_MESSAGE_ROUTING
Loop in message flow found: system is.00.metsapxd, pipeline CENTRAL with inbound adapter XI already processed
Anyone know how to fix the error?
Thx

Hi,
I think your end business system i.e. where proxy exists -- this application system is configured as "integration engine/HUB". Try to keep it as (SXMB_ADM -> Integration engine configuration) type of business system as "applicaiton system" instead of integration engine/server.
Regards,
Rao.Mallikarjuna

How to return "HTTP/1.0 401 Authorization Required" from OSB's Message Flow

How can I return "HTTP/1.0 401 Authorization Required" header from OSB's Message Flow?
Using of "HTTP Transport -> Authentification" is not possible, because I need flow condition. Transports Headers activity from design palette doesn't allow to send such headers.
Practical usage: request for kerberos ticket by sending two headers: 401 and WWW-Authenticate: Negotiate...

Can you briefly expand the use case for better understanding?
HTTP Client---> Hand Shakes or what ever ----> HTTP Proxy (OSB )---> Pipeline----
Philosophy behind pipeline is that it is designed to work on the request. Correct me if I'm wrong.
What you are asking is ability to control the hand shake either in Pipeline or some way during proxy configuration. Unfortunately there is no configuration that is exposed for HTTP proxies in OSB to control that behavior.
Manoj

Where to find detail message flow in scenario of AQ to DB adapter?

I have installed hub, aq and DB adapter. The repository, adapters seem to be run fine. I put some messages in AQ and found out that there were no messages appeared in DB. The messages could be found in AQ_OUTBOUND_QUEUE. Sine there is no error message in adapter log files(trace is turned on), I am not sure it's the hub problem or adapter problems. Where should i check the message flow so to decide the problem?
Any constructive advice is welcome.

Hi Johnson,
Have you set the queue to the event in the deploy tab of AQ application in iStudio? If not then please set your OUTBOUND_QUEUE to the corresponding event and then do push metadata after starting the adapter. You can have a look at "Appendix A -> Deployment -> Setting Queues" of Interconnect User guide for this.
regards,
Sandeep

Need help for the message flow in sap xi system?

Hello All,
My requirement is some wat different............in the existing production system the message flow is 3500 per hour......... now we want to develop new scenario and the message flow will be 8500 message per hour.
Client is not giving me the system details ...like network details and i need to say that can we send 8500 messages in the existing system with out changing the process speed or data base.
also please advice the best ways to increase the performance in the sap xi system when the message flow is huge.
thanks in advace.
Thanks and Regards,
chinna

>
chinnasapxi wrote:
> Hello All,
>
> My requirement is some wat different............in the existing production system the message flow is 3500 per hour......... now we want to develop new scenario and the message flow will be 8500 message per hour.
> chinna
3500 to 8500 is not a message count tht needs to be worried about
but to be on the safer side what is the average size of a single message?
if the size is not a significant one u can go ahead

About BPM Message identification

please,tell me how to identify a BPM message in SXMB_MONI i.e., just by looking at the message we need to tell that

Hi,
go to transaction SXMB_MONI_BPE...all messages under that are BPM related..
More over u can see Integartion process name also..
Regards
BILL

How to stop/start SAP XI Message flow in controlled way?

Hi All,
I am facing a scenario where for maintenance activity I need to stop all message flow in XI, system should be up and running but no message should processed by XI. I also don't want to shut down system.
Is there any way by which I can stop message coming to XI?
I don't want to deactivate communication channel..
Regards,
Gourav

Hi,
maybe (just an idea) you can try to deregister all queues?
raport : RSXMB_REGISTER_QUEUES
then all the queues should stop but I haven't checked it
so you'd have to do some tests and find out if this
does not have any other negative impact of some other
XI processes
Regards,
michal
<a href="/people/michal.krawczyk2/blog/2005/06/28/xipi-faq-frequently-asked-questions">XI FAQ - Frequently Asked Questions</a>

Regarding Message Flow in XI

Hi Experts,
I was go through the Blog given by Siva Maranani
/people/siva.maranani/blog/2005/05/25/understanding-message-flow-in-xi
But in this After sending the Xi Message from send Queue to Integration Engine...
What wi be the process inside this IE.
Please let me know
Regards
Khanna

But as per my knowledge in the IS the Pipeline services wil be done( Includes Receiver det, Interface Det, Mapping, Logical rout, Tech. routing, Call Adapter, Message Split )
It means there is no further process inside the IE??????????
Messages received at the Integration Server are processed through a defined series of steps called Pipeline Services. These pipeline services are part of Integration Engine which in turn is a part of Integration Server
Only the XI Adapter wil pick the Xi msg from Send Queue to IE.......Thats it?????/
Yes. Thats the main task of XI Adapter. It also does the SLD lookup.

then this IE wil pass this XI Msg to the IS ..... Right????????
As mentioned, IE is part of IS
Regards,
Prateek

Understanding message flow in XI

Hi,
In Understanding message flow in XI /people/siva.maranani/blog/2005/05/25/understanding-message-flow-in-xi
1. What is API and SPI.
2. In return diagram What is the functionality of "servlet"

Hello Anil,
An application programming interface (API) is a source code interface that a computer system or program library provides to support requests for services to be made of it by a computer program. An API differs from an application binary interface in that it is specified in terms of a programming language that can be compiled when an application is built, rather than an explicit low level description of how data is laid out in memory.
The software that provides the functionality described by an API is said to be an implementation of the API. The API itself is abstract, in that it specifies an interface and does not get involved with implementation details.
Two well known APIs are the Single UNIX Specification and the Microsoft Windows API.
An API is often a part of a software development kit (SDK).
The term API is used in two related senses:
A coherent interface consisting of several classes or several sets of related functions or procedures.
A single entry point such as a method, function or procedure.
SPI : Security Parameters Index

BPM Message Flow

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