ABAP

Here i want to equate pernr and usnam but both are different data types so how to do it?

IF LT_BKPF IS NOT INITIAL.

SELECT nachn pernr

   FROM pa0002 INTO CORRESPONDING FIELDS OF TABLE lt_pa0002

    FOR ALL ENTRIES IN lt_bkpf

      WHERE pernr = lt_bkpf-usnam.

ENDIF.

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