UOM Mismatch Issue Between like Purchase PO and Receipt

In the Purchase Order, I request items using the Kilogram (Kg) unit.
However, during Purchase Receipt, I receive the items using different units such as Piece or Carton.

I have already set up the UOM Conversion inside the Item, so that Piece and Carton convert correctly to Kilogram.
But when I try to submit the Purchase Receipt with a different UOM, I get the following error:

**Incorrect value in row 1: UOM must be equal to ‘Kg’
**