Only input tax is allowed for account 647035 1006, O0 is not allowed

Hello All,

Initially we have posted a transaction as part of Agency billing with reference to billing document and accounting entry posted as below:

01 PC1000 -Inter company customer a/c 1344.36

31 VC2000 -Inter company vendor ac/c 1099.84

40 647035 - COGS STD INTERCOAGEN 1099.84 - IO (Tax code)

50 544000 - SALES INTERCO AGENCY : 1344.36

When we are trying to reverse the above mentioned document, I am getting an error as below "Only input tax is allowed for account 647035 1006, O0 is not allowed"

We are not allowed to change the GL master data, It was maintained with input tax only allowed.

Please suggest me, where we can change the settings with reference to account 647035 to allow the postings and to avoid the above error message.

Thanks

Prasad