Select a different data exchange definition

What causes this issue?

You tried to copy a communication type from the temporary storage to a
data exchange definition. However, this communcication type is already
allocated to a data exchange definition.

System Response

INCLUDE ISU_VERARB OBJECT DOKU ID TX

How to fix this error?

Select a data exchange definition with a different communication type.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.