A package must be specified
Message type: E = Error
Message class: EA - IDoc Basis Messages
Message number: 661
Message text: A package must be specified
What causes this issue?
No development class configured for current user.
However, a development class must be stated when creating segments.
System Response
Processing cannot be continued.
How to fix this error?
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.