Esker Fax and PDF Generation

We currently use esker fax for a corporate faxing solution. If we generate a word document it’s sent correctly, converting that word to PDF and trying to send errors out. Working with the Esker fax support team, they would like us to try generating the PDF in version 1.4 or 1.6. Is that possible?
We currently have a license for Aspose.Total

Hello

Thanks for your inquiry. Unfortunately, there is now way to set PDF 1.4/1.6 compliance level. Please see the following link to learn more about supported compliance levels:
https://reference.aspose.com/words/net/aspose.words.saving/pdfcompliance/
Best regards,