API integration

Description	Ticket	Severity
Sites created via API could be created again when the same site already existed for the study. With this correction, duplicate site numbers are now prevented for new site records. When a duplicate site number is submitted, the API now returns an error message that the site number is already in use for the study.	CHK-51397	2
POST and PUT artifact attachment API requests incorrectly returned an HTTP 400 error message, "Error attaching a file to an artifact," even when the file was attached successfully. This issue has been corrected, and artifact attachment API requests no longer return the error for messages with successful file attachments.	CHK-52038	2