Split required and part match headers for BOM import

InvenTree/part/bom.py

@@ -232,14 +232,18 @@ class BomUploadManager:
 
     # Fields which are absolutely necessary for valid upload
     REQUIRED_HEADERS = [
-        'Part_Name',
         'Quantity'
     ]
 
+    # Fields which are used for part matching (only one of them is needed)
+    PART_MATCH_HEADERS = [
+        'Part_Name',
+        'Part_IPN',
+        'Part_ID',
+    ]
+    
     # Fields which would be helpful but are not required
     OPTIONAL_HEADERS = [
-        'Part_IPN',
-        'Part_ID',
         'Reference',
         'Note',
         'Overage',
@@ -251,7 +255,7 @@ class BomUploadManager:
         'Overage'
     ]
 
-    HEADERS = REQUIRED_HEADERS + OPTIONAL_HEADERS
+    HEADERS = REQUIRED_HEADERS + PART_MATCH_HEADERS + OPTIONAL_HEADERS
 
     def __init__(self, bom_file):
         """ Initialize the BomUpload class with a user-uploaded file object """

InvenTree/part/views.py

@@ -1425,10 +1425,23 @@ class BomUpload(InvenTreeRoleMixin, FormView):
         # Are there any missing columns?
         self.missing_columns = []
 
+        # Check that all required fields are present
         for col in BomUploadManager.REQUIRED_HEADERS:
             if col not in self.column_selections.values():
                 self.missing_columns.append(col)
 
+        # Check that at least one of the part match field is present
+        part_match_found = False
+        for col in BomUploadManager.PART_MATCH_HEADERS:
+            if col in self.column_selections.values():
+                part_match_found = True
+                break
+        
+        # If not, notify user
+        if not part_match_found:
+            for col in BomUploadManager.PART_MATCH_HEADERS:
+                self.missing_columns.append(col)
+
     def handleFieldSelection(self):
         """ Handle the output of the field selection form.
         Here the user is presented with the raw data and must select the