XNAT SCP rejection based on transfer syntax

[Prantik Kundu]

I'm having issues regarding transfer syntaxes that the XNAT SCP accepts. I'm running XNAT 1.8.9.1 that has been brought up with docker compose method.

I'm trying to upload a DICOM of MRI data that has a JPEGLosslessSV1 encoding to the XNAT SCP,  but my C-STORE request is getting rejected.

When debugging, I'm finding that the only accepted transfer syntax on my association for abstract syntax of 'MR Image Storage'  is 'Explicit VR Little Endian'. Is this true?

These DICOMs were exported from the university PACS and not directly from the scanners, which might explain their funny encoding. Still I want to understand the limitations of this SCP.

Moreover I can't figure out the SCP in this XNAT version is implemented, is it no longer Orthanc or some embedded SCP?