fix: purchase receipt test
diff --git a/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py b/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
index 72a2465..1fcde44 100644
--- a/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
+++ b/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
@@ -406,6 +406,7 @@
 							debit=0.0,
 							credit=discrepancy_caused_by_exchange_rate_difference,
 							remarks=remarks,
+							against_type="Supplier",
 							against_account=self.supplier,
 							debit_in_account_currency=-1 * discrepancy_caused_by_exchange_rate_difference,
 							account_currency=account_currency,
@@ -419,6 +420,7 @@
 							debit=discrepancy_caused_by_exchange_rate_difference,
 							credit=0.0,
 							remarks=remarks,
+							against_type="Supplier",
 							against_account=self.supplier,
 							debit_in_account_currency=-1 * discrepancy_caused_by_exchange_rate_difference,
 							account_currency=account_currency,