Extended withholding tax - US Error 7Q 301 updating withholding tax

Question

Cannot get the system to allow me to change the withholding tax information on the accounting documents.  Extended withholding tax has been configured. The fields in the line items have been opened to allow changes to the withholding tax data, both for K and S.  The venodor has been updated for the withholding tax type and code. Program RFWT0010 does not update any records.  The funny thing is it works in the sandbox but not the regular testing dev client.  I have compared config and it is the same in both places.   Any ideas?
Thank you.

Answer 1

Hi,
Please refer to note 363650, you will see the following information;
C) Change Rules for classical and extended withholding tax If the withholding tax base amount should be changed after a
      docment has been paid already, the following steps are required:
For Classical Withholding Tax and only if the withholding tax amount is zero.
Change of withholding tax base amount or withholding tax code of a cleared invoice.
If the withholding tax base amount and/or the withholding tax code needs to be changed after an invoice has been cleared please follow steps;
As you see from the above information the following quotation "only if the withholding tax amount is zero".  Is this the case in your scenario?
If a withholding tax amount other than zero has been posted, you cannot change the values via transaction FB02.
Please also review the IMG documentation for transaction OB32 via spro -> Financial accounting -> Financial accounting global settings -> Document -> Line item -> Document change rules, line item. here you will see the following information;
Document Change Rules, Line Item
In this activity, you determine under which circumstances fields within posted documents can be changed.
Note
For a number of fields, the system itself determines that they can no longer be changed after posting. This includes all fields which are central to the principles of orderly accounting, for example, the amount posted and the account.
The system also prevents the update objects from being changed in documents which have already been posted, independent of the document change rules
Thus as you can see from the above description if an amount has been posted to the account you cannot change the fields despite entering in the field in OB32 as changable.
Please also be aware that the important table concerning extended withholding tax is WITH_ITEM.  This is where the data found through the button  'Withholding tax Information' in FB03 is held.
(For example in the 'Withholding tax data button' If you click on the help of the field Withholding Code and select the button 'Technical information' you will see that the field name is WT_WITHCD) The fields concerned with same
  WITH_ITEM-WT_QSSHB
  WITH_ITEM-WT_WITHCD
should be customized in the document change rules (transaction OB32) You will also have to ensure that the posting keys in the document are set to optional (transaction ob41)
Regards
Ravinagh Boni