A document merges successfully when selecting Same as template in Composer, but when outputting to a PDF file, the following error appears: One or more documents failed to convert to PDF.
A common reason for this is using a custom font in the selected template. While this doesn't cause issues when merging Same as template, it will error out when converting to PDF.
What to do
The resolution is to Contact Support to get the custom fonts uploaded. Customers need to provide an .otf or .ttf font file.
Two Word documents merge successfully when merged separately. Although when assembling two documents together using either the &AWD=1 or &DefaultPDF=1 parameters, the following error appears: One or more documents failed to convert to PDF.
If the &Defaultpdf=1 parameter is removed from the composer button URL, the following error appears when opening the Word document: Xml parsing error.
What to do
Check the compatibility settings on each Word document and make sure it is using the most recent file version. Save each document as a .docx filetype.