What does CUNIT, ABPSP & ABPSN conversion routines do?

What does CUNIT, ABPSP & ABPSN conversion routines do?
There is no help on SAP documentation on how these conversion routines work?Can someone tell me in simple english on how to they the padding logic.
Something like if <b>all numeric</b> then <b>pad spaces on the left side</b> etc
thanks
Rao

Hi Rao,
I can help you with CUNIT. SAP manages units of measure in an internal and external format. That its, when it is saved in database, it uses a code (for example for units it uses ST), and when it shows you the value, it uses another one (in this case UN). So, what basically does CUNIT conversion routines (A.H.P mentioned the function modules) is to switch between those formats.
Hope to help!
Regards,
Diego

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Hi Sankar,
Conversion takes place when converting the contents of a screen field from display format to SAP-internal format and vice versa and when outputting with the ABAP statement WRITE, depending on the data type of the field.
Check the info here:
http://help.sap.com/saphelp_nw04/helpdata/en/2b/e9a20d3347b340946c32331c96a64e/content.htm
http://help.sap.com/saphelp_nw04/helpdata/en/07/6de91f463a9b47b1fedb5be18699e7/content.htm
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hi all,
Can any one let me know the commonly used conversion routines apart from alpha conversion routines ?
thanxs ina dvance
hari

Hari
There are lot of conversion routines, like
BUCAT Conversion Routine. eg. The BUCAT conversion routine converts the internal presentation of the budget type
(0BUD_CAT) into the external presentation (0BUD_CAT_EX), using the active entries in the
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see the link below for all the routines.
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/b9119290-0201-0010-69af-96fe3bf00243
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Hi Jin Ming,
Conversion Exit ABSPN is related to WBS element and not project at R/3 side.
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The Process is,
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2. Delete master data from 0Project.
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Thank you in advance, Aleksandra

Hi,
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Can anyone tell me what is the use of that conversion routine with an example.
thanxs in advance
hari

Hi,
Depending on the data type of the field, there is a conversion when the contents of a screen field are converted from display format to SAP-internal format and vice versa. If this standard conversion is not suitable, it can be overridden by defining a conversion routine in the underlying domain.
Conversion routines are identified by a five-place name and are stored as a group of two function modules. The function modules have a fixed naming convention. The following function modules are assigned to conversion routine xxxxx:
CONVERSION_EXIT_xxxxx_INPUT
CONVERSION_EXIT_xxxxx_OUTPUT
The INPUT module converts from display format to internal format, and the OUTPUT module converts from internal format to display format.
When is a Conversion Routine Executed?
If a screen field refers to a domain with a conversion routine, this conversion routine is executed automatically when entries are saved in this screen field or when values are displayed in this screen field. The conversion routine of the domain is also triggered when the field contents are output with the WRITE statement.
Table SPFLI in the flight model contains information about the flights offered by the carriers. The time for each flight is recorded in field FLTIME. Enter and display the time of the flight in input templates in the form HHH:MM (hours:minutes). Store the flight time entered in the database as an integer number (number of minutes of the flight). An entry 3:27 is therefore stored in the database as 207 (3 hours, 27 minutes = 207 minutes).
Field FLTIME refers to domain S_DURA, to which conversion routine SDURA is assigned. The value is thus converted by the two function modules <b>CONVERSION_EXIT_SDURA_INPUT</b> and <b>CONVERSION_EXIT_SDURA_OUTPUT</b>.
A conversion routine can also be triggered by specifying its five-place name in the attributes of a field in the Screen Painter or with the addition <b>USING EDIT MASK <Name of conversion routine></b> in the WRITE command in the program. With the USING NO EDIT MASK addition in the WRITE statement, you can skip a conversion routine defined for a domain when outputting.
Parameters
The two function modules of a conversion routine must have precisely two parameters with the names INPUT and OUTPUT for the value to be converted and the converted value.
The INPUT parameter in the INPUT conversion and the OUTPUT parameter in the OUTPUT conversion should not have any reference fields because the value passed in the call could have a different length than that expected.
Programming Conversion Routines
ABAP statements that result in an interruption of processing (such as CALL SCREEN, CALL DIALOG, CALL TRANSACTION, SUBMIT, COMMIT WORK, ROLLBACK WORK, MESSAGE I, MESSAGE W) are not allowed in conversion routines.
Only A messages are meaningful in output conversion, but A, E and S messages can be triggered in input conversion (although S messages are not very meaningful here). E messages result in an error dialog. Exceptions are not intercepted in the call.
The output conversion is also triggered with WRITE and WRITE TO. The conversion routine may therefore occur very frequently with lists. The output conversion should therefore be programmed as efficiently as possible.
No external performs should be used in conversion routines. Programs that are called externally use the table work areas of the first calling main program. In conversion routines this can result in errors that cannot be easily analyzed since they are sometimes called at unpredictable times in the program flow.
<b>Pls refer link which contains code as an example to conversion routine used in abap</b>.
<a href="http://www.bwexpertonline.com/downloads/source_code.doc">http://www.bwexpertonline.com/downloads/source_code.doc</a>
Pls reward points.
Regards,
Ameet

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Can any body please tell me the proper use of <b>Conversion Routine in Abap dictionary.</b>
Please give me a practical example where it has been used.
Thanks
prabhudutta

hi,
here is help for conversion routine
Conversion takes place when converting the contents of a screen field from display format to SAP-internal format and vice versa and when outputting with the ABAP statement WRITE, depending on the data type of the field.
If standard conversion is not suitable, it can be overridden by specifying a conversion routine in the underlying domain.
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The INPUT module performs the conversion from display format to internal format. The OUTPUT module performs the conversion from internal format to display format.
If a screen field refers to a domain with a conversion routine, this conversion routine is executed automatically each time an entry is made in this screen field or when values are displayed with this screen field.
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BR
Stefan

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Hi,
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<Recordset>
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       <f2> </f2>
       <f3> </f3>
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              <field2 />
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              <field2 />
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        <f3> </f3>
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if this is the input structure then FCC goes like this ....
Recordset:Header,Body,SubBody,Trailer
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SubBody.fieldFixedLengths 10,20,20 (based on you are structure fixed lengths)
Body.endSeparator - 'nl'
Trailer.fieldFixedLengths 10,20,30.(based on you are structure fixed lengths)
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Cheer's

What does CUNIT, ABPSP & ABPSN conversion routines do?

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