Packaging of XML and 1 or more PDF in one file

Questions
1

For transfer between custom solutions, the found sets in several related tables are packaged in XML.
Then, 1 or more PDF need to be added. I am adding them encoded and wrapped in [CDATA tags.
It works well and importing runs smoothly.

However, there may be a better solution to this. How would you package the XML and PDFs for transfer?

2

how about a zip file?

Or with DynaPDF put them as embedded files in the PDF.

3

Having the PDF embedded Base64 encoded inside the XML-string is the method of choice for electronic invoicing with Swiss Health System where the medical prescription needs to be part of the invoice.

4

+1
tend to do it this way too

5

Thank you @MonkeybreadSoftware, @EfficientBizz and @harvest for feedback.