Error 54003
Product: Sync
Error - 54003
Sync: Invalid If-Match header
The specified If-Match header cannot be used for concurrency control.
Possible Causes
- The value specified in the If-Match header is not a valid Sync object revision.
Possible Solutions
The value you provide should be a revision assigned by the Sync service when interacting with an object.
- In SDKs, this is the
revision
field, part of the object descriptor. - When using REST (e.g. via the Twilio Helper libraries) this is the
ETag
header provided in responses.