Tax code & and account & not compatible

What causes this issue?

The tax code &V1& und the tax category set for account &V2& are not
compatible; either the tax code is an input tax type and the tax
category output tax or vice versa.

How to fix this error?

Please check the tax code entered and possibly the G/L account.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

If both are correct, you have two options:
The G/L account &V2& has been set wrong.
Change the G/L account &V2& by going to the screen
<LS>Change G/L account: Account Management Posting</> and changing
the entry in the <LS>Tax category</> field.
IF &DEVICE& = 'SCREEN'.
<DS:TRAN.FS02>Proceed</>
ENDIF.
The tax code &V1& has been wrongly defined.
Your system administrator must change the tax type in the
properties of the tax code &V1&.
IF &DEVICE& = 'SCREEN'.
<DS:TRAN.FTXP>Proceed</>
ENDIF.

Error message extract from SAP system. Copyright SAP SE.