-4903 The SQL statement is unsupported.

User response
This error is returned when:   
An attempt was made in CA-IDMS or IMS to update a parent when the mapping
includes the child and parent. To resolve this, change the mapping to specify
that the segment updated is the lowest-level leaf segment.  

An attempt is made to update a table containing record array mappings
of OCCURES clauses. Change the mapping to specify that each occurrence is
a separate column.  

The SQL statement is unsupported. Change the SQL.