Not allowed to change Item Wise Tax Detail after submission

ERPNext User Forum
1

Hi, I am trying to update a Sales Invoice, but an dialog pops up:

Not allowed to change Item Wise Tax Detail after submission.

Normally I can set “Allow on Submit” on the field, but I can’t find where to locate this. Can someone point me in the right direction?

Regards,

JR

2

I think i found the reason. It’s because of rounding the sales tax to 4 digits. however in the sales invoice it’s only rounded to 2 digits. How to round the sales tax from 4 digits to 2?