Internal Server Error for PDF->DOCX and DOCX->PDF conversions

Hi together,

From time to time we see some Internal Server errors from the Adobe API endpoint for converting DOCX to PDF or PDF to DOCX.

For example multiple conversion from PDF to DOCX failed with an Internal Server error on 2021-10-28 in the times from 12:42:00 UTC till 2021-10-28 14:24:00 UTC and also later that day from 19:16:00 UTC till 19:26:00 UTC.

In addition we encountered multiple Internal Server errors for the conversion from DOCX to PDF this morning at 06:54:00 UTC.

Could you maybe help us understand what is causing these Internal Server errors and if there is anything on our side that we could change ?

If it would help debuging the issues we could provide you the request ids of the failed conversion operations.

Note: This has happened without enabling the options reported in  https://community.adobe.com/t5/document-services-apis-discussions/facing-internal-server-errors-on-pdf-services-api/m-p/12475683 that lead to all requests fail with an Internal Server error.