BAPI_USER_GET_DETAIL error : Info message Nu00B0538

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Hello,

I have a RFC external client program that attacks an SAP server and uses the BAPI_USER_GET_DETAIL bapi function.

Up to the early 4.7 R/3 Server version, this client works fine and retrieves the USER data, but now with the new Server versions (late 4.7, BW, ECC 6.0...) I do face an Information message N°538 telling me that "The external user ID maintenance is no longer available" and none of the user data requested is returned.

I checked the BAPI function interface and find out that this interface has changed and that new TABLES and EXPORTING structures had been added.

Among which an UCLASSYS, EXTIDHEAD and EXTIDPART TABLES...

I do not use them in my RFC call.

Do you see a way to modify (maybe!) my client to prevent this problem??

And how can I be sure that I will not have to modify my client for each future SAP Server version???

Thank you in advance.

Xavier