diff --git a/helpers/lotOccupancyDB/addLotOccupancy.d.ts b/helpers/lotOccupancyDB/addLotOccupancy.d.ts
index 0ad517ce..de1e04cb 100644
--- a/helpers/lotOccupancyDB/addLotOccupancy.d.ts
+++ b/helpers/lotOccupancyDB/addLotOccupancy.d.ts
@@ -4,7 +4,7 @@ interface AddLotOccupancyForm {
     lotId: string | number;
     occupancyStartDateString: string;
     occupancyEndDateString: string;
-    occupancyTypeFieldIds: string;
+    occupancyTypeFieldIds?: string;
     [lotOccupancyFieldValue_occupancyTypeFieldId: string]: unknown;
 }
 export declare const addLotOccupancy: (lotOccupancyForm: AddLotOccupancyForm, requestSession: recordTypes.PartialSession) => number;
diff --git a/helpers/lotOccupancyDB/addLotOccupancy.js b/helpers/lotOccupancyDB/addLotOccupancy.js
index 70400084..67b75273 100644
--- a/helpers/lotOccupancyDB/addLotOccupancy.js
+++ b/helpers/lotOccupancyDB/addLotOccupancy.js
@@ -22,7 +22,7 @@ export const addLotOccupancy = (lotOccupancyForm, requestSession) => {
         undefined :
         dateTimeFunctions.dateStringToInteger(lotOccupancyForm.occupancyEndDateString)), requestSession.user.userName, rightNowMillis, requestSession.user.userName, rightNowMillis);
     const lotOccupancyId = result.lastInsertRowid;
-    const occupancyTypeFieldIds = lotOccupancyForm.occupancyTypeFieldIds.split(",");
+    const occupancyTypeFieldIds = (lotOccupancyForm.occupancyTypeFieldIds || "").split(",");
     for (const occupancyTypeFieldId of occupancyTypeFieldIds) {
         const lotOccupancyFieldValue = lotOccupancyForm["lotOccupancyFieldValue_" + occupancyTypeFieldId];
         if (lotOccupancyFieldValue && lotOccupancyFieldValue !== "") {
diff --git a/helpers/lotOccupancyDB/addLotOccupancy.ts b/helpers/lotOccupancyDB/addLotOccupancy.ts
index cee7078b..1bb2b75a 100644
--- a/helpers/lotOccupancyDB/addLotOccupancy.ts
+++ b/helpers/lotOccupancyDB/addLotOccupancy.ts
@@ -20,7 +20,7 @@ interface AddLotOccupancyForm {
     occupancyStartDateString: string;
     occupancyEndDateString: string;
 
-    occupancyTypeFieldIds: string;
+    occupancyTypeFieldIds?: string;
     [lotOccupancyFieldValue_occupancyTypeFieldId: string]: unknown;
 }
 
@@ -60,7 +60,7 @@ export const addLotOccupancy =
 
         const lotOccupancyId = result.lastInsertRowid as number;
 
-        const occupancyTypeFieldIds = lotOccupancyForm.occupancyTypeFieldIds.split(",");
+        const occupancyTypeFieldIds = (lotOccupancyForm.occupancyTypeFieldIds || "").split(",");
 
         for (const occupancyTypeFieldId of occupancyTypeFieldIds) {
 
diff --git a/helpers/lotOccupancyDB/updateLotOccupancy.d.ts b/helpers/lotOccupancyDB/updateLotOccupancy.d.ts
index ed8e7d23..2ca250cf 100644
--- a/helpers/lotOccupancyDB/updateLotOccupancy.d.ts
+++ b/helpers/lotOccupancyDB/updateLotOccupancy.d.ts
@@ -5,7 +5,7 @@ interface UpdateLotOccupancyForm {
     lotId: string | number;
     occupancyStartDateString: string;
     occupancyEndDateString: string;
-    occupancyTypeFieldIds: string;
+    occupancyTypeFieldIds?: string;
     [lotOccupancyFieldValue_occupancyTypeFieldId: string]: unknown;
 }
 export declare function updateLotOccupancy(lotOccupancyForm: UpdateLotOccupancyForm, requestSession: recordTypes.PartialSession): boolean;
diff --git a/helpers/lotOccupancyDB/updateLotOccupancy.js b/helpers/lotOccupancyDB/updateLotOccupancy.js
index d3f1670a..217208b9 100644
--- a/helpers/lotOccupancyDB/updateLotOccupancy.js
+++ b/helpers/lotOccupancyDB/updateLotOccupancy.js
@@ -18,7 +18,7 @@ export function updateLotOccupancy(lotOccupancyForm, requestSession) {
         " and recordDelete_timeMillis is null")
         .run(lotOccupancyForm.occupancyTypeId, (lotOccupancyForm.lotId === "" ? undefined : lotOccupancyForm.lotId), dateStringToInteger(lotOccupancyForm.occupancyStartDateString), (lotOccupancyForm.occupancyEndDateString === "" ? undefined : dateStringToInteger(lotOccupancyForm.occupancyEndDateString)), requestSession.user.userName, rightNowMillis, lotOccupancyForm.lotOccupancyId);
     if (result.changes > 0) {
-        const occupancyTypeFieldIds = lotOccupancyForm.occupancyTypeFieldIds.split(",");
+        const occupancyTypeFieldIds = (lotOccupancyForm.occupancyTypeFieldIds || "").split(",");
         for (const occupancyTypeFieldId of occupancyTypeFieldIds) {
             const lotOccupancyFieldValue = lotOccupancyForm["lotOccupancyFieldValue_" + occupancyTypeFieldId];
             if (lotOccupancyFieldValue && lotOccupancyFieldValue !== "") {
diff --git a/helpers/lotOccupancyDB/updateLotOccupancy.ts b/helpers/lotOccupancyDB/updateLotOccupancy.ts
index e41a4876..c92932e8 100644
--- a/helpers/lotOccupancyDB/updateLotOccupancy.ts
+++ b/helpers/lotOccupancyDB/updateLotOccupancy.ts
@@ -26,7 +26,7 @@ interface UpdateLotOccupancyForm {
     occupancyStartDateString: string;
     occupancyEndDateString: string;
 
-    occupancyTypeFieldIds: string;
+    occupancyTypeFieldIds?: string;
     [lotOccupancyFieldValue_occupancyTypeFieldId: string]: unknown;
 }
 
@@ -57,7 +57,7 @@ export function updateLotOccupancy(lotOccupancyForm: UpdateLotOccupancyForm, req
 
     if (result.changes > 0) {
 
-        const occupancyTypeFieldIds = lotOccupancyForm.occupancyTypeFieldIds.split(",");
+        const occupancyTypeFieldIds = (lotOccupancyForm.occupancyTypeFieldIds || "").split(",");
 
         for (const occupancyTypeFieldId of occupancyTypeFieldIds) {