The OLTP Source still has errors

Hello all,

I have a requirement where I have to add field EKGRP (from table EKKO) and field NETWR (from table EKPO) to Data Source 2LIS_02_CGR .I have added these fields EKGRP (Component Type BKGRP) and field NETWR (Component type BWERT).I have added Reference table EKKO and Ref field as WAERK for NETWR.

After activation of extract structure when I go in to Datasource and trying to unhide the field I get error "The OLTP Source still has errors".

Please let me know if anyone has gone through this error earlier.

Best Regards,

Arvind