diff --git a/firestore-one-to-one/extension.yaml b/firestore-one-to-one/extension.yaml
index dae05b4..814969c 100644
--- a/firestore-one-to-one/extension.yaml
+++ b/firestore-one-to-one/extension.yaml
@@ -117,22 +117,6 @@ params:
     example: capitals
     required: true
 
-  - param: COLLECTION_A_REF_FIELD
-    label: Collection A reference field
-    description: >-
-      The name of the field in Collection A that will contain a reference to Collection B.
-    type: string
-    example: capitalId
-    required: true
-
-  - param: COLLECTION_B_REF_FIELD
-    label: Collection B reference field
-    description: >-
-      The name of the field in Collection B that will contain a reference to Collection A.
-    type: string
-    example: countryId
-    required: true
-
   - param: COLLECTION_A_DATA_FIELD
     label: Collection A data field
     description: >-
diff --git a/firestore-one-to-one/functions/src/config.ts b/firestore-one-to-one/functions/src/config.ts
index 5eba56b..0a46fd6 100644
--- a/firestore-one-to-one/functions/src/config.ts
+++ b/firestore-one-to-one/functions/src/config.ts
@@ -8,8 +8,6 @@ export enum DeletionBehavior {
 interface Config {
   collectionAPath: string;
   collectionBPath: string;
-  collectionARefField: string;
-  collectionBRefField: string;
   collectionADataField: string;
   collectionBDataField: string;
   fieldsToCopyFromAToB?: string[];
@@ -21,8 +19,6 @@ interface Config {
 const config: Config = {
   collectionAPath: process.env.COLLECTION_A_PATH!,
   collectionBPath: process.env.COLLECTION_B_PATH!,
-  collectionARefField: process.env.COLLECTION_A_REF_FIELD!,
-  collectionBRefField: process.env.COLLECTION_B_REF_FIELD!,
   collectionADataField: process.env.COLLECTION_A_DATA_FIELD!,
   collectionBDataField: process.env.COLLECTION_B_DATA_FIELD!,
   fieldsToCopyFromAToB: process.env.FIELDS_TO_COPY_FROM_A_TO_B?.split(","),
@@ -35,7 +31,6 @@ const config: Config = {
 
 export interface CollectionConfig {
   collectionPath: string;
-  refField: string;
   dataField: string;
   fieldsToCopy?: string[];
   deletionBehavior: DeletionBehavior;
@@ -43,7 +38,6 @@ export interface CollectionConfig {
 
 export const collectionAConfig: CollectionConfig = {
   collectionPath: config.collectionAPath,
-  refField: config.collectionARefField,
   dataField: config.collectionADataField,
   fieldsToCopy: config.fieldsToCopyFromAToB,
   deletionBehavior: config.collectionADeletionBehavior,
@@ -51,7 +45,6 @@ export const collectionAConfig: CollectionConfig = {
 
 export const collectionBConfig: CollectionConfig = {
   collectionPath: config.collectionBPath,
-  refField: config.collectionBRefField,
   dataField: config.collectionBDataField,
   fieldsToCopy: config.fieldsToCopyFromBToA,
   deletionBehavior: config.collectionBDeletionBehavior,