Your EPR declarations and PPWR compliance are only as good as the data behind them. And that data starts with your suppliers. If you are chasing packaging specifications via email, collecting them in spreadsheets, or extracting them from PDFs, you already know the problem: the data arrives incomplete, inconsistent, or in a format that requires manual re-entry before it is usable.

The typical process

In most businesses, the packaging data collection cycle works roughly like this: procurement or sustainability sends out a request - often an Excel template - to suppliers asking for packaging specifications. Some suppliers respond promptly. Many do not. Follow-up emails go out. Some suppliers fill in the template correctly. Others misunderstand the fields, leave sections blank, or provide data in a different format entirely.

When the data does arrive, someone on the compliance team has to review it. Does the material description match a valid material code? Are the weights plausible? Is the recycled content figure a percentage or a weight? Has the supplier included component-level detail, or have they just provided a summary for the whole product? Every query is another email, another delay.

Every new product launch restarts this cycle. Every supplier change restarts it. And the data you collected six months ago may be out of date if a supplier changed a material or adjusted a weight without telling you.

What suppliers need to provide

Under PPWR and current EPR schemes, the data you need from suppliers at the component level includes:

  • Material type per component - not just "plastic" but specifically what type (PET, HDPE, PP, etc.), since this determines the PP01-PP12 code and national EPR material category
  • Weight per component in grams - critical for EPR declarations, which are weight-based
  • Recycled content percentage - with the clear distinction between "not yet provided" (null) and "confirmed zero" (0%). This distinction matters for fee calculations and regulatory accuracy
  • Packaging format and construction - rigid vs flexible, mono-material vs composite, number of layers. Required for sorting label derivation and recyclability assessment
  • Certifications - compostability (EN 13432 or equivalent), food contact compliance, FSC/PEFC chain of custody

Common data quality problems

Certain data quality issues come up repeatedly:

Material misidentification is common. Foil lids are frequently reported as "aluminium" when they are actually aluminium-plastic laminates - this affects both the EPR material category and the recyclability assessment. Coated paperboard is sometimes reported as "paper" without the coating being declared. These errors propagate through to your declarations and fee calculations.

Missing recycled content is widespread. If a supplier has not provided recycled content data, is the answer "zero" or "unknown"? If your system treats both as zero, you are potentially under-reporting recycled content (losing eco-modulation discounts in some schemes) or over-reporting it (creating audit risk). The null-versus-zero distinction is not pedantic - it is operationally significant.

Component-level detail collapsed to SKU level is another frequent problem. A supplier provides "total packaging weight: 45g" for a product, when what you need is the weight of each individual component - the bottle, the cap, the label, the sleeve. EPR declarations, recyclability assessment, and PPWR compliance all work at the component level.

The structured approach

The fix is not better spreadsheet templates. It is giving suppliers a structured declaration form that validates data on intake. Required fields ensure nothing is missed. Material code lookups prevent free-text misidentification. Weight validation catches implausible values. Completeness checks flag missing components before the data reaches your compliance engine.

Merchant Packaging provides a supplier-facing portal with guided declaration forms, bulk upload via Excel and CSV, automated chasing for overdue submissions, and validation against the same rules used for regulatory reporting. Suppliers submit data in good faith against a clear declaration, with a visible submission date and reference number for audit purposes. Accepted data flows directly into your packaging database at SKU and component level - no re-entry, no reconciliation.