SPRX122 - Interface uses external and internal message definitions

SAP Error Message - Details

• Message type: E = Error

• Message class: SPRX - Proxy Generation

• Message number: 122

• Message text: Interface uses external and internal message definitions

What causes this issue?

In a message interface you can use messages from different sources:
Message types and fault message types edited in the Enterprise Services
Repository
Messages imported into the Enterprise Services Repository (external
definitions, RFC, IDoc)
In the current message interface, message types from different sources
have been used. Since messages from these different sources must be
handled differently during proxy generation, such a mixture of messages
within a message interface is not possible.

System Response

The interface cannot be generated.

How to fix this error?

Change the interface definition accordingly in the Enterprise Services
Repository.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.