Supported file types
The REST API does not process the contents of files, so the only restrictions on file types are those blocklisted by the MultiTrans server. Because the file contents are not processed, the restrictions are based on the file extensions.
The blocklist is kept in <installfolder>\runtime\default\flow.properties and can be edited if necessary. Typically this list contains executable or malicious types of files.
If a user attempts to upload an unsupported file type, an error message is returned. This affects all upload types (URL, direct path or base64) for any method in which files can be uploaded.