Oracle Message ORA-26687 - no instantiation SCN provided for string.string in source database string

ERRORno instantiation SCN provided for string.string in source database string
CAUSEObject SCN was not set. If the object is a table, then both fields will be filled, for example SCOTT.EMP. If the object is a schema, only one field will be set, for example SCOTT.. And if the object is the entire database, no fields will be set, for example ..
ACTIONSet the SCN by calling DBMS_APPLY_ADM.SET_%_INSTANTIATION_SCN