topic Re: Determine which validation step called the user exit, possible? in Application Development and Automation Discussions

Determine which validation step called the user exit, possible?

Former Member — Mon, 07 Mar 2011 22:27:39 GMT

Hello all,

We have a a validation with different steps that use the same user exit in their respective check.

My functional analyst asked me if there is a way to programmatically determine in the user exit which step is executing the user exit.

So I am asking the same question here.

As an example:

Validation FI100 has step 001, 002, and 003.

Each of these steps use the user exit U100 from module pool ZGGBR001 in their check.

I haven't found a way in the code of U100 to determine which step called U100.

Does anyone know if this can be done?

I have used the following technique to get a variable from the program's call stack.

data: var_name(30) type c value '(Z_CALLING)VARIABLE' .
field-symbols: <fs> type any.
*
  assign (var_name) to <fs>.
  write: / 'Variable from Z_CALLING', <fs>.

But I'm not sure how this might work with validation steps/user exits.

Thanks

Bruce

Re: Determine which validation step called the user exit, possible?

Former Member — Tue, 08 Mar 2011 05:05:55 GMT

Use the function module SYSTEM_CALLSTACK to get the ABAP Call stack. Search for the record where PROGNAME = 'GBTLEFI0' which will give the details of Validation ID and Step Number involved in the call.

Re: Determine which validation step called the user exit, possible?

ThomasZloch — Tue, 08 Mar 2011 08:29:34 GMT

I just tried your idea with

DATA: var_name(30) TYPE c VALUE '(GBTC2FI0)G_STEP' .

and that worked for me.

I would be careful with calling function modules like SYSTEM_CALLSTACK inside validation exits, as this code potentially runs for tens of thousands of transactions in a short time (in case of interfaces), which might cause runtime or system load issues.

Thomas

Re: Determine which validation step called the user exit, possible?

Former Member — Tue, 08 Mar 2011 08:47:00 GMT

Thomas, Thanks for correcting me. But when i checked the call stack program GBTLEFI0 is appearing instead of GBTC2FI0 (i am getting the validation step G_STEP from the program GBTLEFI0). Is the difference specific to SAP version/configuration in which I am working ? (I am on ECC 5.0).

Re: Determine which validation step called the user exit, possible?

ThomasZloch — Tue, 08 Mar 2011 09:03:28 GMT

I'm working with ECC 6.0, and analysed the FI validations as maintained via OB28.

This shows that both our approaches might not be very stable, as a release upgrade might well cause changes in the call stack.

Another way would be to create a "wrapper exit" for each step, which just assigns a step number and passes it to the central exit.

Thomas

Re: Determine which validation step called the user exit, possible?

Former Member — Tue, 08 Mar 2011 22:04:24 GMT

Vinod,

I did some debugging after I posted my question. I came to the same solution, use FM 'SYSTEM_CALLSTACK'.

VALCHCK_2FI100##001

loop at i_callstack into w_callstack
                    where EVENTNAME+0(9) = 'VALCHCK_2'.

FI110 is the validation

001 is the step

Thomas,

Thanks for the caveats.

Bruce