Trying to e file with PDF attachment Getting Reject

[FDNY]

I'm trying to e file a 2019 amended return with a one page attachment and I get the following reject:

A binary attachment submitted in the PDF format must begin with the file header "%PDF-"

I did once before have same issue and I can't for the life of me remember what I did after reading up on %PDF which was way over my head.  I thought I put in the header 1%PDF- then the name of attachment but it didn't work this time.  Maybe I'll try with quotation marks.  

Would anyone know what I need to do?

Thanks

[jklcpa]

Delete the pdf and close the return. Rescan the document and name it something different, and make sure to close it. Reattach the pdf with the new name, calculate the return, recreate the e-file and try again. 

https://support.cch.com/kb/solution.aspx/e-file-Rejection-X0000-029-A-binary-attachment-submitted-in-the-PDF-format-must-begin-with-the-file-header-PDF

[FDNY]

Thank you Judy, this didn't come up on my knowledge base search.  Can't thank you enough, I should be your servant for a day, this was driving me crazy.