Function & not defined
Message type: E = Error
Message class: MN - Message class for subsequent settlement (Purchasing)
Message number: 279
Message text: Function & not defined
What causes this issue?
If you did not invoke function &V1& via manual input, it is likely that
a program error has occurred.
System Response
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
How to fix this error?
If necessary, contact your system administrator.
Error message extract from SAP system. Copyright SAP SE.