Location Codes and descriptions

Hello Gurus.

I'm posting an idoc in WE19 (in EM).

In idoc Segment E1EVMLID I update LOCCOD ABC1  and LOCID1 0001.

Spro Location Codes:  External Location Code Set = ABC1  Ext. Location ID1 = 0001.

Spro Location Codes:  Internal  Location Code Set = ABC1  Int. Location ID1 = 0001.  Update Street, City, Country etc.

Spro update Sender independent Mapping

The message posts and updates the EH  but does not pick up the Street, City, Country etc.  (Can't see it in se16  /saptrx/evm_hdr).

In Debug

/SAPTRX/CODE_MAPPING line 56   add_loc_data =' '.

IF add_loc_data = 'X'.

               PERFORM get_add_data CHANGING int_codes.

Is there something required in spro or the idoc that makes add_loc_data = 'X'.

Please can you help.

Cheers.

Zenon.