Variable data GS1 Datamatrix Sticker PDF Creation

I have three CSV files, 50,000 rows each, that must be turned into unique, GS1-compliant 2D Datamatrix codes and then flowed onto A3 sticker sheets that my printer will supply. Once I send you that layout template, every page should hold a tightly aligned matrix of codes, with the first-to-last code number clearly printed in the header so we can identify the contents at a glance.

You will need to:
• Generate the 150,000 GS1 2D Datamatrix symbols directly from the CSV data, keeping checksum and application identifiers intact.
• Place them into the provided A3 template so the spacing matches the die-cut sticker grid.
• Output press-ready, high-resolution PDFs (one per sheet) that my printer can send straight to plate without further tweaks.

I will review a small sample sheet for accuracy and scannability before you batch-process the rest; after sign-off, deliver the full set plus the working files you used (scripts, InDesign package, etc.). Showing past work on similar variable-data or packaging projects will help me move quickly on a hire.