Solved
Invalid data for multipart attachments / arrays
We are trying to attach 25 attachment to https://api2.frontapp.com/channels/cha_123/messages and get a 400 response. When we attach less (21 of the 25 attachments) everything goes through fine.
Support EngineeringAnswer
Community Manager
December 28, 2022
The limitation you experienced is enforced by the library we use internally to parse your request. The workaround for this would be to send your array properties with no index specified, i.e attachments[] instead of attachments[0].
You can read a bit more here: https://dev.frontapp.com/reference/attachments#send-multipart-request
--Maxime