Hi Expert,
When i run FBL1N i can see that DIsc base amt field show 0 amt for some vendors & for some its value in it why system behaving in such a strange way.
One more thing when i try to manually post an invoice in FB01 for 2 (X & Y) different vendor for same company code & account group for vendor X when i enter posting key 31 & press enter it will go to next screen where i can disc base amt field but for vendor Y this is not working.