Issue
n my event's Breadcrumbs (or another event field), a value is replaced with the error "Invalid JSON data: Data too long" instead of showing the data I expected.
[Screenshot: an event's Breadcrumbs showing a field replaced with the "Invalid JSON data: Data too long" error.]
Applies To
All SaaS Customers and Self-Hosted Users
Error Monitoring
Performance Monitoring
All SDKs that support breadcrumbs
Symptoms
One or more fields in the event payload cannot be viewed; the field is replaced with "Invalid JSON data: Data too long".
Resolution
This happens when an individual field in the event exceeds its allowed size limit. Sentry trims and truncates fields that exceed their per-field limits, and when a value is too large to store, it is replaced with "Invalid JSON data: Data too long". You can review the exact limits in the size limits documentation.
To resolve this, reduce the size of the value before you send it:
Trim large strings or payloads in your application before attaching them to breadcrumbs or other fields.
If you regularly need to send more data, put it in
extra, which allows up to 16kB per item (totalextradata is limited to 256kB). For reference, context objects are limited to 8kB.