"Tax Code" field on F-90 line item screen in sap fico

"Tax Code" field on F-90 line item screen

Question: Hi,

Just wonder if anyone knows how make the field "Tax Code" (BSEG-MWSKZ) appears on the screen for transaction F-90 line item posting (screen 302, program SAPMF05A).

I am doing the transaction using posting key 31. I already tried to manipulate through ob41 and obc4. I found that I am able to manipulate the behaviour of some of the field already on the screen (e.g. to make business area as required entry). However, I cannot suppress it from appearing on the screen and I am not able to make the "Tax Code" appear on the screen that I really needed. Some hints will be appreciated. Thanks!

Regards,
Denis Chan

Answer:
"Tax code" field is managed by "Tax category" field of GL account.
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Best regards,
Maxim

Answer:
Dear Maxim,

Thank you very much for the hint. Due to my ignorance, I cannot find anything related to "Tax Category" after some serious attempts. Would you mind giving more details? Very much appreciated!

Regards,
Denis

Answer:
In the GL Master record there is the tax category field you have to fill that in.