Placeholder to add pdf via variable

Hi together,

I want to do the following workflow for our documantation.

We have to send a complete documentation for each product we sell.

Every product has its own serial number, this numer is on Title sheet, and also in the footer of every page.

The only Output I will need is a pdf File.

I am new to the documentation and also to framemaker. So I am thinking about DITA,...

1. Title sheet
2. TOC
3. operation manual in different languages (english, german, france)
4. material certificates (external pdf file located in a folder and names with serial numer, for example 14046987.pdf)
5. Standard  Certificates (can be an external pdf, or included in the Framemaker document)
6. leak test protocoll (external pdf file located in a folder and names with serial numer, for example 14046987.pdf)
7. List with accessories stuff,...

Some of the parts will be also in use for different Products.

This is the reason, why I am thinking about DITA, Structured Fm Documents,...

Can you give me some feedback or ideas?

My primary issue is to load the external pdf via serialnumer (serialnumber will be a variable)

Ist there a option to automated output, so I can Say please generate Documentaion for each of the following 20 Serialnumbers?

Thank you in advance.