idoc error with bd87 in SRM

Hello,

I have tried to launch some idocs in status 30 with the transaction BD87 in SRM and now the status is 02 due to this error:

Function module ZSR_GB_I_IDOC_P1_ARIBA_PROXY is not RFC-compatible

Message no. E0035

Diagnosis

Function module ZSR_GB_I_IDOC_P1_ARIBA_PROXY, which should assume
reponsibility for further IDoc processing, has been stored for port
SRM_XI_P1.

Such function modules must support Remote Function Call. However, function
module ZSR_GB_I_IDOC_P1_ARIBA_PROXY does not have this attribute. As a result,
this IDoc could not be processed further.

Procedure

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.

These idocs contain the items of a shopping cart. The line item 1 was sent properly without run the idoc by BD87.

Thank you.

Best regards.