For domain &, data element & and convfunc &, source package is not unique
Message type: E = Error
Message class: CNV - Conversion: Messages for Conversion Services (CNCC)
Message number: 257
Message text: For domain &, data element & and convfunc &, source package is not unique
What causes this issue?
The combination
domain &V1&
data element &V2&
routine &V3&
occurs in more than one source package. This causes a conflict.
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?
Set field source package for the domain / data element manually.
Error message extract from SAP system. Copyright SAP SE.