feat: SW-963 Implemented error states and handling booking code and multiroom

apps/scandic-web/components/Forms/BookingWidget/schema.ts

@@ -109,12 +109,24 @@ export const bookingWidgetSchema = z
     ) {
       ctx.addIssue({
         code: z.ZodIssueCode.custom,
-        message: "Multiroom with voucher error",
+        message: "Multi-room booking is not available with this booking code.",
         path: ["bookingCode.value"],
       })
       ctx.addIssue({
         code: z.ZodIssueCode.custom,
-        message: "Multiroom with voucher error",
+        message: "Multi-room booking is not available with this booking code.",
+        path: ["rooms"],
+      })
+    }
+    if (value.rooms.length > 1 && value.redemption) {
+      ctx.addIssue({
+        code: z.ZodIssueCode.custom,
+        message: "Multi-room booking is not available with reward night.",
+        path: ["bookingCode.value"],
+      })
+      ctx.addIssue({
+        code: z.ZodIssueCode.custom,
+        message: "Multi-room booking is not available with reward night.",
         path: ["rooms"],
       })
     }