3863 Duplicate definition of '%VSTR' in NAMED phrase.
The name given in NAMED phrase was not unique. It was already used in another NAMED phrase. In a macro, parameter names are resolved to named phrases. Other names in a statement may be implicitly resolved to named phrases as well. Macro parameter names should differ from other names to avoid conflict.
Check the names in NAMED phrase; change any duplicate ones and resubmit the request.