How can we update or remove a supplier contact on an existing BPA using FBDI in Oracle Fusion?

Summary:

When we are trying to remove the supplier contact from an existing BPA through FBDI, we have populated #NULL in the Supplier Contact field of the FBDI template. However, the supplier contact is not removed from the BPA header, although a new change order is created successfully.

We also tried providing a different supplier contact in the Supplier Contact field, but the supplier contact on the BPA header was not updated.

Could you please let us know how to update or remove the supplier contact on an existing BPA header through FBDI? Is this functionality supported in Oracle Fusion?