Ratnakar,
You can use FOR ALL ENTRIES, like Kiran says: ABAP select for all entries statement in SAP .
Or you can change the fields of the structure for the internal table 'I_GLPCA' to only get the fields you take in the select statement (MSL, POPER, LACC, RPRCTR and RYEAR). So you can use 'INTO TABLE' instead of 'INTO CORRESPONDING FIELDS OF TABLE'.
Regards,
Pieter