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Error codes → first fix
Use this page when Lyt-ning shows a message and you need one first action before calling Support.
Goal
See a common Lyt-ning message, try the first fix, and know when to escalate.
Where this happens
Messages appear on the till, in the Core App (back office), or when opening Reports & Analytics. This page is the short first-aid list. The full Error glossary has longer explanations.
- At the till: sign-in, sale, refund, print, and offline messages.
- In the back office (Core App): subscription, device, permission, and integration messages.
- In Lytning Analytics: session expired or will not open after single-sign-on from the Core App.
Lyt-ning usually shows plain words, not numeric codes. Match the wording you see — the exact words may differ slightly between the till, the Core App, and Lytning Analytics, so pick the closest row. Do not invent codes. For the longer C-1…C-11 list, open the Error glossary.
Prerequisites
None.
Steps
Try the First thing to try once. If it fails, use Who fixes it next.
| What you see | First thing to try | Who fixes it if that fails |
|---|---|---|
| Subscription expired / cannot log in because of subscription | Confirm you are on the right store. Ask the franchise admin to renew this store's subscription under System & Settings → Billing → Subscription & Accounts. | Franchise admin · then Support if the banner stays after renewal |
| Device not registered / device limit reached | Restart the till once. If the message returns, contact Support — each till device is registered to your franchise during setup. | Support · franchise admin if your franchise has its own device registration path |
| Wrong PIN / PIN locked | Re-enter carefully. After a lock, stop trying — ask supervisor to reset under Finance & Admin → HR Management → Employee Security. | Supervisor (store PIN) · franchise admin if the account is suspended |
| No internet / offline mode / connection keeps dropping | Stay on the app. Finish till sales; do not force-close or clear app data. Pause cloud-only admin and integrations. Full steps: Working offline. | Cashier self-serve for till sales · supervisor if upload queue stays full after the link returns · Support if it never clears |
| Smart Invoice queue stuck / fiscal submit failed | Keep the original sale or invoice reference. Wait for the normal retry. Check System & Settings → Till & Payments → Smart Invoicing status with the franchise admin. | Franchise admin (subscription and connection) · Support if it remains pending or fails after retry |
| Reports & Analytics will not open / session expired (SSO) | Return to the Core App, sign in if needed, then open Reports & Analytics again so single-sign-on can refresh. | Supervisor or franchise admin · Support if every browser fails after a fresh Core App sign-in |
| Printer not found / receipt will not print | Check power, paper, and cable or wireless link. Reprint or share the on-screen reference so the customer still has proof. | Cashier self-serve first · supervisor for store printer setup · Support if hardware is fine but every print fails |
| Sale will not save / upload pending | Do not take payment again. Search for the sale by reference. Wait for upload when online. See Working offline. | Cashier waits and retries once · supervisor checks the offline queue · Support if the sale never appears |
| Stock not found / item blocked | Check spelling, barcode, and store. Ask supervisor to open Stock Management (top-level sidebar group) and create or correct the item. | Supervisor · franchise admin if the whole store template is empty (new store) |
| Permission denied / cannot open a menu item | Do not use someone else's account. Ask supervisor or franchise admin to grant the right role under Finance & Admin → HR Management → Employee Security. | Supervisor (store) · franchise admin (franchise-wide) · see Who can do what (permissions) |
How to escalate cleanly
- Note the exact words on screen (screenshot if you can).
- Write the store name, screen you were on, reference number, and what you already tried.
- Open a ticket via Support & escalation. Never put passwords, full card numbers, or full customer IDs in the ticket.
Expected result
- You try one fix before calling Support.
- You know whether the next owner is you, a supervisor, franchise admin, or Support.
Edge cases
- Message not listed here — search the Error glossary, then open a Support ticket with a screenshot of the exact words.
- Same message on every till after a power cut — treat as offline or device registration first; see Working offline and Onboarding.
- Integration message only on one store — the franchise admin checks that store's Add-ons & Integrations or System & Settings → Till & Payments connection (depending on the integration), not the whole franchise.
- You can see the menu but the action still fails — permissions may allow the screen but not the save; see Who can do what (permissions).