diff --git a/src-ui/src/app/services/document-list-view.service.spec.ts b/src-ui/src/app/services/document-list-view.service.spec.ts
index 2ef084b17..d93acc521 100644
--- a/src-ui/src/app/services/document-list-view.service.spec.ts
+++ b/src-ui/src/app/services/document-list-view.service.spec.ts
@@ -156,7 +156,7 @@ describe('DocumentListViewService', () => {
     expect(documentListViewService.currentPage).toEqual(1)
   })
 
-  it('should handle error on filtering request', () => {
+  it('should handle object error on filtering request', () => {
     documentListViewService.currentPage = 1
     const tags__id__in = 'hello'
     const filterRulesAny = [
@@ -185,6 +185,50 @@ describe('DocumentListViewService', () => {
     )
   })
 
+  it('should handle object error on filtering request for custom field sorts', () => {
+    documentListViewService.currentPage = 1
+    documentListViewService.sortField = 'custom_field_999'
+    let req = httpTestingController.expectOne(
+      `${environment.apiBaseUrl}documents/?page=1&page_size=50&ordering=-custom_field_999&truncate_content=true`
+    )
+    expect(req.request.method).toEqual('GET')
+    req.flush(
+      { custom_field_999: ['Custom field not found'] },
+      { status: 400, statusText: 'Unexpected error' }
+    )
+    expect(documentListViewService.error).toEqual(
+      'custom_field_999: Custom field not found'
+    )
+    // reset the list
+    documentListViewService.sortField = 'created'
+    req = httpTestingController.expectOne(
+      `${environment.apiBaseUrl}documents/?page=1&page_size=50&ordering=-created&truncate_content=true`
+    )
+  })
+
+  it('should handle string error on filtering request', () => {
+    documentListViewService.currentPage = 1
+    const tags__id__in = 'hello'
+    const filterRulesAny = [
+      {
+        rule_type: FILTER_HAS_TAGS_ANY,
+        value: tags__id__in,
+      },
+    ]
+    documentListViewService.filterRules = filterRulesAny
+    let req = httpTestingController.expectOne(
+      `${environment.apiBaseUrl}documents/?page=1&page_size=50&ordering=-created&truncate_content=true&tags__id__in=${tags__id__in}`
+    )
+    expect(req.request.method).toEqual('GET')
+    req.flush('Generic error', { status: 404, statusText: 'Unexpected error' })
+    expect(documentListViewService.error).toEqual('Generic error')
+    // reset the list
+    documentListViewService.filterRules = []
+    req = httpTestingController.expectOne(
+      `${environment.apiBaseUrl}documents/?page=1&page_size=50&ordering=-created&truncate_content=true`
+    )
+  })
+
   it('should support setting sort', () => {
     expect(documentListViewService.sortField).toEqual('created')
     expect(documentListViewService.sortReverse).toBeTruthy()
diff --git a/src-ui/src/app/services/document-list-view.service.ts b/src-ui/src/app/services/document-list-view.service.ts
index e15c11d3a..893bfca91 100644
--- a/src-ui/src/app/services/document-list-view.service.ts
+++ b/src-ui/src/app/services/document-list-view.service.ts
@@ -307,18 +307,23 @@ export class DocumentListViewService {
             activeListViewState.currentPage = 1
             this.reload()
           } else {
+            console.log(error)
+
             this.selectionData = null
             let errorMessage
             if (
-              typeof error.error !== 'string' &&
+              typeof error.error === 'object' &&
               Object.keys(error.error).length > 0
             ) {
               // e.g. { archive_serial_number: Array<string> }
               errorMessage = Object.keys(error.error)
                 .map((fieldName) => {
+                  const fieldNameBase = fieldName.split('__')[0]
                   const fieldError: Array<string> = error.error[fieldName]
                   return `${
-                    this.sortFields.find((f) => f.field == fieldName)?.name
+                    this.sortFields.find(
+                      (f) => f.field?.split('__')[0] == fieldNameBase
+                    )?.name ?? fieldNameBase
                   }: ${fieldError[0]}`
                 })
                 .join(', ')
diff --git a/src/documents/filters.py b/src/documents/filters.py
index fd52e43aa..185ba7b6f 100644
--- a/src/documents/filters.py
+++ b/src/documents/filters.py
@@ -781,7 +781,9 @@ class DocumentsOrderingFilter(OrderingFilter):
             try:
                 field = CustomField.objects.get(pk=custom_field_id)
             except CustomField.DoesNotExist:
-                raise ValueError("Custom field not found")
+                raise serializers.ValidationError(
+                    {self.prefix + str(custom_field_id): [_("Custom field not found")]},
+                )
 
             annotation = None
             match field.data_type:
diff --git a/src/documents/tests/test_api_documents.py b/src/documents/tests/test_api_documents.py
index 048449fd4..ea5227c8a 100644
--- a/src/documents/tests/test_api_documents.py
+++ b/src/documents/tests/test_api_documents.py
@@ -2920,11 +2920,10 @@ class TestDocumentApiCustomFieldsSorting(DirectoriesMixin, APITestCase):
             - 400 is returned
         """
 
-        with self.assertRaises(ValueError):
-            response = self.client.get(
-                "/api/documents/?ordering=custom_field_999",
-            )
-            self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
+        response = self.client.get(
+            "/api/documents/?ordering=custom_field_999",
+        )
+        self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
 
     def test_document_custom_fields_sorting_invalid_data_type(self):
         """
@@ -2933,7 +2932,7 @@ class TestDocumentApiCustomFieldsSorting(DirectoriesMixin, APITestCase):
         WHEN:
             - API request for document filtering with a custom field sorting with a new (unhandled) data type
         THEN:
-            - 400 is returned
+            - Error is raised
         """
 
         custom_field = CustomField.objects.create(
@@ -2942,7 +2941,6 @@ class TestDocumentApiCustomFieldsSorting(DirectoriesMixin, APITestCase):
         )
 
         with self.assertRaises(ValueError):
-            response = self.client.get(
+            self.client.get(
                 f"/api/documents/?ordering=custom_field_{custom_field.pk}",
             )
-            self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)