Tax code not populated after submitting change request on purchase requisition

Hi,

We are running into an urgent problem regarding the tax classification code and non-recoverable tax in iProcurement.

This problem occurs when we perform a change on an existing requisition.

When a new requisition is entered, the tax classification_code is required and the non recoverable tax is added to the requisition.

Autocreate then copies the tax classification code to the purchase order.

The problem occurs when we perform a change on the requisition in order to add a revision to the allready created PO.

The change is completed, but the revised PO no longer has non recoverable tax added on it. This way revised PO's are sent to the supplier without tax.