How to differentiate multiple aRFC calls into the same session.

Hi experts,
I have following problem:
I start multiple aRFC calls in the same remote session by using the same task ID for each call and use
KEEPING TASK when receiving the results.
The calls are all of the same RFM (e.g get_status of obj), just calling parameters changes ( in the generic example, the parameter: obj).
In the receive method, I differentiate to which obj the result is related by exporting the obj_id on success of the RFM.
My problem is when the status call fails. I just get an error message explaining what the problem is. But I don't get the exporting parameters.
Do you have any idea how to solve this problem?
kind regards,
Sahla

This is actually the workaround I made to go on.
Actually the underlying logic in the RFM for getting the status is based on a synchronous call, as to say when you get the exception you know of which request it comes from.
Therefore the exception messages and their parameters are well defined and according to the error situation filled with necessary data explaining the exception situation.
Unfortunately the excpetion class used is based on the message T100 interface and has the limitations of just four message parameters and each of 50 charcter length.
I overwrite the last message parameter with the needed obj parameter, taking the risk to overwrite valuable system responses explaining the situation.
I thought there could be a more elegant solution from the framework itself.
kind regards,
Sahla

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