Hi,
This is a Z-FM module, so I am not aware of its usage.
But from my understanding, some FMs needs to be used in the RFC call, so RFC-enabled is required.
The solution in the popup message is clear:
===
Please change the attributes of function module ZSR_GB_I_IDOC_P1_ARIBA_PROXY
or enter an RFC-compatible function module in the port definition for port
SRM_XI_P1
===
If this is a FM defined in ECC side, it will be called from SRM. So it should be remote enabled.
Best regards,
Ivy