SAP Message 5K301 - Cannot create logical document reference for XML schema &1

Diagnosis
To obtain a list of all elements defined within the XML schema, thesystem requires a reference to a logical document. However, in this case
, an error occurred while the system attempted to create the requiredreference for schema &V1&.

System Response
Because the system could not create a logical document reference, no XMLfile was generated.

Procedure
If you cannot resolve the error, report it to the program owner forassistance.