Facing internal server erros when posting a PDF document

Hello,

We are posting a valid PDF to https://cpf-ue1.adobe.io/ops/:create  to the Document Services API. We receive to following 500 response for 1 particular document (please review the attachment).

The x-request-id header contained the following value: x2uOh1LJhC7aB3lpEnkv1HeuuAnNwIMS

Could let us know what is going wrong here?

Thanks in advance.

Best regards,
Marco