This code performs data manipulation on the tables `tcurf` and...

This code performs data manipulation on the tables tcurf and gt_tcurs.

For tcurf:

• If the internal table gt_tcurf[] is not empty, select all records from tcurf where either the fcurr or tcurr fields match any values in the lr_curr_i internal table AND do not match any values in the lr_curr_e internal table. Store the selected records in the internal table gt_tcurf_del.
• If any records were selected (indicated by sy-subrc = 0), delete them from tcurf.
• Write a message with the number of records in gt_tcurf_del.
• Modify tcurf by adding any records in the internal table gt_tcurf.

For gt_tcurs:

• If the internal table lr_curr_i is not empty, delete any records from gt_tcurs where the fcurr and tcurr fields do not match any values in lr_curr_i.
• If the internal table lr_curr_e is not empty, delete any records from gt_tcurs where the fcurr field matches any value in lr_curr_e OR the tcurr field matches any value in lr_curr_e.