diff --git a/services/graphql/src/definitions/customer.js b/services/graphql/src/definitions/customer.js
index cd5f0cd..aa2e1bd 100644
--- a/services/graphql/src/definitions/customer.js
+++ b/services/graphql/src/definitions/customer.js
@@ -215,7 +215,7 @@ input CustomerExternalIdsInput {
 
 input RapidCustomerIdentificationMutationInput {
   "The product ID to associate with this rapid identification."
-  productId: Int!
+  productId: Int
   "The customer's email address."
   email: String!
   "First name of customer, up to 100 characters long"
diff --git a/services/graphql/src/resolvers/customer.js b/services/graphql/src/resolvers/customer.js
index ce03387..bb460cd 100644
--- a/services/graphql/src/resolvers/customer.js
+++ b/services/graphql/src/resolvers/customer.js
@@ -371,7 +371,7 @@ module.exports = {
 
       const promoCode = input.promoCode ? input.promoCode.trim() : null;
       if (promoCode && promoCode.length > 50) throw new UserInputError('The promo code must be 50 characters or fewer.');
-      const productMap = new Map([[input.productId, true]]);
+      const productMap = new Map([...(input.productId ? [[input.productId, true]] : [])]);
 
       const deploymentTypeIdMap = input.deploymentTypeIds.reduce((map, id) => {
         map.set(id, true);