Merge pull request #32435 from frappe/mergify/bp/version-13-hotfix/pr-32412

fix: Incorrect TCS amount deducted in Sales Invoice (backport #32412)

erpnext/accounts/doctype/tax_withholding_category/tax_withholding_category.py

@@ -326,6 +326,9 @@ def get_advance_vouchers(
 		"party": ["in", parties],
 	}
 
+	if party_type == "Customer":
+		filters.update({"against_voucher": ["is", "not set"]})
+
 	if company:
 		filters["company"] = company
 	if from_date and to_date: