diff --git a/src/store/index.js b/src/store/index.js
index 826062f2..f0f767db 100644
--- a/src/store/index.js
+++ b/src/store/index.js
@@ -1279,7 +1279,7 @@ export const useMainStore = defineStore({
             const { vehicle, damage, parentAccountNumber, referralSequenceNumber, lineItems } = this.order;
             const { carId } = vehicle;
             const glassArray = convertGlassPieceNamingForApi(damage.glassToReplace);
-            const lineItemParts = [...lineItems.glassParts, ...lineItems.supportingItems].map((part) => ({
+            const lineItemParts = [...(lineItems.glassParts || []), ...(lineItems.supportingItems || [])].map((part) => ({
                 partNumber: part.partNumber,
                 recalibrationType: part.recalibrationType
             }));