SAP Message 0T043 - Transport layer &1 is not allowed for system &2

Diagnosis
You specified a transport layer that by definition is not allowed forthe system &V2&.
An example of this is the transport layer 'SAP', which is only assignedautomatically to the 'SAP' system as a standard transport layer. It maynot be assigned to any other system as a standard transport layer.

System Response
The assignment is rejected.

Procedure
Use another transport layer.