feat: add fields to hold SO and SO Item ref in PR Item

erpnext/buying/doctype/purchase_order/purchase_order.py

@@ -556,6 +556,8 @@ def make_purchase_receipt(source_name, target_doc=None):
 					"bom": "bom",
 					"material_request": "material_request",
 					"material_request_item": "material_request_item",
+					"sales_order": "sales_order",
+					"sales_order_item": "sales_order_item",
 				},
 				"postprocess": update_item,
 				"condition": lambda doc: abs(doc.received_qty) < abs(doc.qty)

erpnext/stock/doctype/purchase_receipt_item/purchase_receipt_item.json

@@ -125,7 +125,9 @@
   "dimension_col_break",
   "cost_center",
   "section_break_80",
-  "page_break"
+  "page_break",
+  "sales_order",
+  "sales_order_item"
  ],
  "fields": [
   {
@@ -1062,12 +1064,32 @@
    "fieldtype": "Link",
    "label": "WIP Composite Asset",
    "options": "Asset"
+  },
+  {
+   "fieldname": "sales_order",
+   "fieldtype": "Link",
+   "label": "Sales Order",
+   "no_copy": 1,
+   "options": "Sales Order",
+   "print_hide": 1,
+   "read_only": 1,
+   "search_index": 1
+  },
+  {
+   "fieldname": "sales_order_item",
+   "fieldtype": "Data",
+   "hidden": 1,
+   "label": "Sales Order Item",
+   "no_copy": 1,
+   "print_hide": 1,
+   "read_only": 1,
+   "search_index": 1
   }
  ],
  "idx": 1,
  "istable": 1,
  "links": [],
- "modified": "2023-10-03 21:11:50.547261",
+ "modified": "2023-10-19 10:50:58.071735",
  "modified_by": "Administrator",
  "module": "Stock",
  "name": "Purchase Receipt Item",