diff --git a/specifyweb/frontend/js_src/lib/components/DataModel/resource.ts b/specifyweb/frontend/js_src/lib/components/DataModel/resource.ts
index 9928fcf4bde..d66501430cf 100644
--- a/specifyweb/frontend/js_src/lib/components/DataModel/resource.ts
+++ b/specifyweb/frontend/js_src/lib/components/DataModel/resource.ts
@@ -6,12 +6,18 @@ import { f } from '../../utils/functools';
 import type { DeepPartial, RA, RR } from '../../utils/types';
 import { defined, filterArray } from '../../utils/types';
 import { keysToLowerCase, removeKey } from '../../utils/utils';
+import type { InteractionWithPreps } from '../Interactions/helpers';
+import {
+  interactionPrepTables,
+  interactionsWithPrepTables,
+} from '../Interactions/helpers';
 import { userPreferences } from '../Preferences/userPreferences';
 import { formatUrl } from '../Router/queryString';
 import { relationshipIsToMany } from '../WbPlanView/mappingHelpers';
 import { addMissingFields } from './addMissingFields';
 import { getFieldsFromPath } from './businessRules';
 import type {
+  AnyInteractionPreparation,
   AnySchema,
   SerializedRecord,
   SerializedResource,
@@ -293,6 +299,22 @@ export const getUniqueFields = (table: SpecifyTable): RA<string> =>
     ...table.relationships
       .filter(({ relatedTable }) => relatedTable.name.endsWith('Attachment'))
       .map(({ name }) => name),
+    /*
+     * Interaction Preparations should be considered unique for each
+     * Interaction
+     * See https://github.com/specify/specify7/issues/4012
+     */
+    ...table.relationships
+      .filter(
+        ({ relatedTable }) =>
+          interactionsWithPrepTables.includes(
+            table.name as InteractionWithPreps['tableName']
+          ) &&
+          interactionPrepTables.includes(
+            relatedTable.name as AnyInteractionPreparation['tableName']
+          )
+      )
+      .map(({ name }) => name),
     ...filterArray(
       uniqueFields.map((fieldName) => table.getField(fieldName)?.name)
     ),