Index: grails-app/services/com/lemans/ds/bulk/part/BulkPartService.groovy
===================================================================
diff -u -r9501c26f50b76a4f42bb4afeddaccc835820e58c -r4821882f2a0267de60457562086f25aca989a607
--- grails-app/services/com/lemans/ds/bulk/part/BulkPartService.groovy	(.../BulkPartService.groovy)	(revision 9501c26f50b76a4f42bb4afeddaccc835820e58c)
+++ grails-app/services/com/lemans/ds/bulk/part/BulkPartService.groovy	(.../BulkPartService.groovy)	(revision 4821882f2a0267de60457562086f25aca989a607)
@@ -99,7 +99,7 @@
                 partsWithErrors << eachRow
                 return
             }
-            if (eachRow?.relatedPartNumber in validRelatedPartNumbers) {
+            if (eachRow?.relatedPartNumber?.toString() in validRelatedPartNumbers) {
                 PartAssociation partAssociation = addAssociations(eachRow, partNumber, username)
                 if (partAssociation.hasErrors()) {
                     eachRow.report = partAssociation.errors.allErrors.defaultMessage