EU-GMP Chapter 4 has required a batch processing record for every batch since 30 June 2011, and on 7 July 2025 the European Commission opened a public consultation on the chapter's first full rewrite in fourteen years. For a Canadian Licensed Producer, that record is the document an EU importer's auditor opens first, because it's the only one that follows a single lot of dried flower from harvest to a sealed bulk container.
A cannabis batch record under Chapter 4 is a contemporaneous account of one batch, generated from an approved Manufacturing Formula and Processing Instructions. Paragraph 4.20 lists the nine items it must carry: product name and batch number, dates and times of each stage, operator and checker initials, starting-material quantities, equipment used, in-process control results, yield at each stage, signed deviations, and approval by the person responsible. Health Canada requires records too, under the Cannabis Regulations, but it doesn't prescribe this structure. That gap is where Canadian LPs lose EU audits.
What a cannabis batch record must contain under Chapter 4
Chapter 4 sits inside EU-GMP Part I, the standard an importer's Qualified Person certifies against. Dried flower from Canada is certified against these records at import, so the importer's QP will want the record, or a summary built from it, before release. The table below maps the nine items in paragraph 4.20 onto a flower batch. Call it the 9-item Chapter 4 check.
| Chapter 4 item (4.20) | What it means for dried flower | Where LPs slip |
|---|---|---|
| a) Name and batch number | Cultivar, lot ID, batch size | Lot renumbered after trimming with no cross-reference |
| b) Dates and times of start, stages, completion | Harvest, dry start and end, cure, trim, bulk pack | Dates logged, times missing |
| c) Operator and checker initials per step | Who harvested, who weighed, who verified | One initial covering a whole shift |
| d) Quantity of each starting material weighed | Wet weight in, plus any reprocessed material | Wet weight never recorded |
| e) Processing operations and major equipment | Dry room ID, trimming line, bag sealer | Equipment named, logbook not referenced |
| f) In-process controls and results | Moisture, water activity, visual inspection | Result recorded without the limit |
| g) Yield at pertinent stages | Wet, dry, trimmed, packed, with losses | No expected yield to compare against |
| h) Signed deviations | Any departure from the processing instructions | Deviation sits in a grow app, not the record |
| i) Approval by the person responsible | Production lead sign-off, QA review | Signed before test results are attached |
Item g decides more audits than any other line. Paragraph 4.17 asks the Manufacturing Formula to state an expected final yield with acceptable limits, and 4.20 asks the record to show the yield actually obtained. An auditor puts the two side by side. If 100 kg of wet flower became 18 kg of trimmed bulk and nobody wrote down whether that sits inside the expected range, the record is incomplete, however tidy the rest of it looks. Yield reconciliation isn't paperwork. It is the audit.
Where Canadian records and EU batch records diverge
Health Canada regulates record-keeping through Part 11 of the Cannabis Regulations, and the retention floor there is two years after the day a document is prepared. You document cannabis obtained, produced, sold, destroyed, and held in inventory, and you report movements monthly through CTLS. None of that tells you to assemble one batch processing record generated from an approved Manufacturing Formula.
Chapter 4 does, and it wants two layers. The master documents come first: a Manufacturing Formula for each cultivar and batch size (4.17) and Processing Instructions that state the location, equipment, cleaning methods, line clearance checks, stepwise instructions, and in-process limits (4.18). The batch record is then produced from those masters, so every entry has an instruction to be checked against. A grow log written fresh for each room has no master behind it. That's why an auditor reads it as evidence, not as a batch record.
Retention is the second divergence. Paragraph 4.11 requires batch documentation to be kept for one year after the batch's expiry date or five years after the Qualified Person certifies it, whichever is longer. Flower certified in 2026 therefore carries a documentation obligation into 2031 at the earliest. A Canadian LP that sets its retention schedule to the two-year domestic minimum will be asked, at the audit, what happens in year three.
The two frameworks are also moving at different speeds. The Commission published its Chapter 4 draft on 7 July 2025. Two days later, the EMA's herbal committee adopted Revision 1 of the GACP guideline, the first version with a dedicated annex on indoor cultivation and the records it expects. Within a year, German state inspectors in Hesse were applying a narrow reading of where cultivation ends and GMP begins, as covered in our analysis of Germany's GMP washing crackdown. The records you keep across the drying and trimming boundary now decide which side of that reading your facility lands on.
Treat the Canadian two-year rule as a floor and the EU five-year rule as your schedule. Keeping records longer costs shelf space. Being asked why you didn't costs the account.
How to build a flower batch record that passes an EU audit
Most LPs don't fail on missing data. They fail because the data exists in four places and nobody can assemble it into one record on the day of the audit. The 7-step flower batch record build below fixes that structurally.
1. Write the masters before the batch
Draft a Manufacturing Formula for each cultivar and batch size, with expected yields and limits at the wet, dry, and trimmed stages. Draft Processing Instructions covering harvest, drying, curing, trimming, and bulk packaging, with the time and temperature parameters Annex 7 expects for drying and curing. Approve, sign, date, and version both documents. Nothing in the batch record should exist without a master line to check it against.
2. Define the batch and its stages
Decide what one batch is. One harvest lot of one cultivar from one room is the cleanest definition. Fix the stage boundaries and record the date and the time at each one, not the date alone. Chapter 4 asks for times (4.20b), and auditors use them to test whether entries were made while the work happened.
3. Record at the time of the action
Paragraph 4.8 requires records to be made when each action is taken. A record completed at the end of a shift from memory is a reconstruction, and the handwriting usually shows it. Where a step matters, two people sign: one who did it, one who checked. Corrections stay readable, carry a signature and date, and state a reason (4.9). Our guide to ALCOA+ and Annex 11 covers the electronic version of the same rules.
4. Reconcile yield at every stage
Weigh wet, after drying, after trimming, and at bulk pack. Record retained samples and trim removed so the arithmetic closes. Compare each figure against the expected yield in the Manufacturing Formula and explain anything outside the limit before the record moves to the next stage.
5. Attach in-process controls with their limits
Moisture content and water activity at the end of drying, visual inspection at trimming, seal integrity at packaging. Record the result, the limit, the method, and the initials of the person who ran the test (4.20f). A number without a limit tells the auditor nothing.
6. Put deviations in the record, not beside it
Any departure from the Processing Instructions is written into the batch record with signed authorisation (4.20h), then handed to your deviation and CAPA system. A deviation that lives only in a software ticket has not been recorded in the batch record, whatever the ticket says.
7. Close, approve, and link outward
The person responsible for processing approves the record (4.20i). From there, cross-reference the certificate of analysis from your ISO/IEC 17025 lab, the retained-sample log, and the distribution record Chapter 4 requires for recall (4.28). The importer's QP certifies against this package, so keep it findable in one place.
A grow log is not a batch record. An LP whose QA team can't hand an auditor one document that follows a lot from the harvest room to the sealed export bag is not ready for an EU supplier audit, whatever its licence says.
Batch record gaps that stall EU supplier audits
The Chapter 4 text makes certain gaps visible the moment an auditor opens the record. These are the ones to close before you agree an audit date:
- Hybrid records with no defined controls. Grow data in a cultivation app, weights in a spreadsheet, signatures on paper, and no document stating which of them is the raw data. Paragraph 4.1 asks for the relationships and control measures between those parts to be written down.
- Line clearance that happens but is never recorded. Processing and packaging instructions must include a check that the room and equipment are clear of the previous batch (4.18c and 4.19f). Flower facilities do this every day and rarely document it.
- Equipment logbooks that don't connect to the batch. Paragraph 4.31 wants chronological logbooks for major equipment and processing areas. If the batch record names Dry Room 2 and the room's logbook has no entry for those dates, the auditor has a question you'll struggle to answer.
- Approval before the data. A record signed off while lab results are still pending looks like a release decision made without evidence, and the QP on the other side will read it that way.
- Initials that can't be matched to a trained person. Paragraph 4.29 asks for signature lists and training records. An initial with no name behind it is an unattributed entry.
An EU importer's supplier audit will work through this list in roughly this order, because it's the order the chapter is written in. Fix the record structure first, then the logbooks, then the training file. Reversing that sequence produces a facility that looks compliant on paper and comes apart at item g.
AlphaLeaf is a Health Canada Licensed Producer of indoor-grown, hand-trimmed cannabis flower based in Montreal. We hold export authorisation under the Cannabis Act and maintain the batch documentation, ISO/IEC 17025 batch testing, and full lot traceability that EU import partners and their Qualified Persons need to certify a Canadian batch.
Your next EU supplier audit will open your batch records before it opens anything else. If the record can't be reconciled from wet weight to sealed container, every other part of the quality system is argued from a weaker position. Build the masters. Record in real time. Close the yield. Then book the audit. To discuss supplying the EU medical channel from a Canadian facility with complete batch documentation, contact AlphaLeaf.
Frequently Asked Questions
What is a cannabis batch record under EU-GMP Chapter 4?
It is a contemporaneous record kept for each batch, generated from the approved Manufacturing Formula and Processing Instructions. Paragraph 4.20 lists nine required items: product name and batch number, dates and times of each stage, operator and checker initials, starting-material quantities, equipment used, in-process control results, yield at each stage, signed deviations, and approval by the person responsible for processing.
How long must a Canadian LP keep batch records for cannabis exported to the EU?
Chapter 4 paragraph 4.11 requires batch documentation to be kept for one year after the batch's expiry date or five years after the EU Qualified Person certifies it, whichever is longer. The Cannabis Regulations require most licence-holder records to be kept for at least two years after they are prepared. An exporting LP applies the longer EU period.
Does Health Canada require a batch processing record for dried cannabis?
The Cannabis Regulations require records of cannabis obtained, produced, sold, destroyed, and held in inventory, plus monthly CTLS reporting, but they do not prescribe a Chapter 4 batch processing record built from master documents. An LP supplying the EU builds the record to Chapter 4 and uses it to satisfy both regulators.
Can a cannabis batch record be kept electronically?
Yes. Chapter 4 applies equally to paper, electronic, and hybrid records. Electronic systems need validation, audit trails, restricted access, and a written statement of which data count as raw data. Hybrid systems must document how the paper and electronic parts relate to each other and which one is the official record.
Who signs off a cannabis batch record before export?
At the Licensed Producer, the person responsible for processing approves the record and quality assurance reviews it before release. In the EU, the importer's Qualified Person certifies the batch and must have all records available under paragraph 4.27, which is why the complete record package travels with or ahead of the shipment.
