When manually pairing an ESL device with a Product ID (UPC), the platform performs instant data and hardware validation. Depending on the state of the network, database, or specific device, you may encounter one of the following validation alerts or error messages.
Linking Error Reference Table
Use this matrix to understand what a specific alert means and the appropriate action to take.
| Error Message | Trigger Condition | System Meaning & Next Steps |
| "ESL unreachable" | Failure to push the generated layout to the physical shelf edge. | The system successfully created the image, but the target label is offline, out of range of the Access Point, or experiencing a hardware timeout. |
| "Processing Incomplete" | A backend processing disruption occurs mid-transaction. | A temporary system or database hiccup interrupted the link creation. Retry the action; if it persists, contact support. |
| "Cannot display the Image" | An error occurs while preparing the upcoming display layout. | The data structure or template configuration for this specific item prevents the image from rendering correctly on the target device size. |
| "This action will override the existing link, do you want to proceed?" | The inputted ESL ID is already actively paired with a different UPC. | This is a protective safeguard. Clicking Yes will automatically sever the old product link and overwrite it with your new product assignment. |
| "This is not a valid Product ID" | The system cannot locate the inputted Product ID in the active item database. | The Product ID may be entered incorrectly or it hasn't been provisioned in your store's core inventory feed yet. |
Confirming a Successful Link
When all validations pass and the pairing is successful, the platform provides immediate visual confirmation:
- Real-Time Grid Update: A brand new row is instantly added to the very top of your data grid, ensuring your most recent action is immediately visible.
- Success Indicators: The row will display the active "Linked" icon alongside the confirmed Product ID.
- Deployment Trigger: This state confirms that the storeLink application has successfully matched the records, rendered the custom image template, and transmitted the data packet directly to the physical shelf display.
| 💡Pro-Tip: The "First-Row" Check - Always look at the top row of your grid after a manual link assignment. If the row appears but shows a spinning status wheel or transitions into an "ESL unreachable" state, you know the data mapping was successful, but you should physically check the aisle to ensure the label isn't blocked or too far from a network transmitter. |