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&1 &2 &3 &4

Message type: E = Error

Message class: S_UNIFIED_CON - Message Class for Unified Connectivity

Message number: 159

Message text: &1 &2 &3 &4

What causes this issue?

This RFC call was refused because it failed the Unified Connectivity
runtime checks. The function module is only executable in the same
system and the same client.

System Response

How to fix this error?

In order to call this function module from other systems or clients it
must be assigned to the Default Communication Assembly.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.