How to load the XML data of SAP to a target database

i use an IDocs to read from SAP and converted into XML (ie .XSD ) and now i want to move that XML data to target data base.

i am trying to move XML data to template table, but i am getting this mapping error , even though i used NRDM and mapping while moving to template table.

ERROR MESSAGE :

Invalid mapping expression for column <Query_1.SNDPRN>. Additional information: <Cannot parse expression.

Table <Query.EDI_DC40> for column <SNDPRN> does not occur in the FROM clause. For a top-level query, all columns must belong to some table in the FROM clause.. (BODI-1112351)>. (BODI-1111081)