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Overview
This article helps you diagnose and resolve the lineId - Line is invalid error when changing subscription quantities in Recurly. It details why this error occurs, how it impacts your contract data, and the steps you can take to update your subscriptions successfully.
Issue description
When editing a subscription, changing the quantity of one or more line items can fail with the error message lineId - Line is invalid. This typically happens because the line item ID stored within the subscription data is corrupted or no longer matches a valid line in the system. Because of this mismatch, the API rejects the update request.
Signs
Your subscription edit request returns a lineId - Line is invalid error.
Quantity changes fail to save for one or more items.
The error is isolated to a specific subscription.
The issue persists across multiple edit attempts.
Basic Troubleshooting Steps
Confirm you are editing the correct subscription and specific line item.
Retry the update to rule out a temporary API blip.
Check whether the affected line item was recently removed, replaced, or modified in the subscription.
Review your update request for any malformed or invalid line item IDs.
Verify that your payload references an active line item ID currently existing in the subscription.
Advanced Troubleshooting Steps
Step 1: Inspect your subscription data
Review the subscription record and locate the line item ID associated with the affected item. Compare it directly with the ID used in your update request to confirm whether the value is missing, outdated, or corrupted.
Step 2: Correct or replace the invalid line item ID
If the stored line item ID is corrupted, update the subscription with a valid line item reference. If your configuration requires it, recreate the affected line item entirely. Once the ID is corrected, retry the quantity change.
Step 3: Validate your API request
Ensure the request body contains the correct line item ID and quantity values. Clean up the payload by removing any stale references to deleted or archived lines before resubmitting the request.
Contacting Recurly Support
If the error continues after you verify your subscription data and request payload, please reach out to Recurly support. To help us resolve this quickly for you, ensure you include your subscription ID, the affected line item ID, the full request payload, and the exact error message text.
Additional Resources
For further context, review our developer documentation covering API request examples, subscription edit workflows, and data validation guides for Recurly Subscriptions.
Conclusion
The lineId - Line is invalid error points directly to a mismatched or invalid line item ID within the subscription contract. Once you ensure your request references an active, valid line, your quantity updates will process successfully.
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