How do you correct a mistake in a batch record under good documentation practice?

1The rule, source by source.

The sources that address corrections agree on the core: the original entry stays readable, and the change is attributable and dated. They differ on when a reason is needed.

Each row follows that source’s own wording.¹²³⁴⁵ Part 211, the US drug CGMP regulation, sets no method for correcting a paper entry. FDA’s data integrity guidance instead lists the Part 211 requirements behind data integrity, among them complete information in batch records, activities documented at the time of performance, and records that are checked and reviewed.⁶

2Correcting an entry on paper.

1. Draw a single line through the wrong entry, so the original stays readable. PIC/S tells inspectors to check that the original is not obscured, for example by correction fluid, and that “overwriting is not permitted”.³
2. Write the correct entry in indelible ink. Handwritten entries should be clear, legible and indelible.¹³
3. Sign or initial and date the change.¹² PIC/S expects signature and initials logs that are controlled and current, so each signature is attributable to its author.³
4. Record the reason where appropriate. For changes to critical data, inspectors check that “a valid reason for the change has been recorded and that supporting evidence for the change is available”.³

Records should be made or completed “at the time each action is taken”.¹ Forms should leave room for corrections: PIC/S expects enough space for an operator “to cross out, initial and date the error, and record any explanation required”, and asks for unused fields to be crossed out, dated and signed.³

3What a correction must never do.

• Obscure the original. No correction fluid, no overwriting, no erasable ink, and no entries made in pencil and inked over later.³
• Replace the record. FDA expects incomplete or erroneous forms to be “kept as part of the permanent record along with written justification for their replacement”, and numbered sets of blank forms to be reconciled when complete.⁶ PIC/S names, as a risk, a filled record with an anomalous entry being “replaced by a new rewritten template”, and asks for any re-issue of a blank form to be justified and approved.³
• Move data off the record. Temporary recording on scraps of paper should be prohibited, and FDA does not accept data recorded on paper that is thrown away after transcription.³⁶
• Leave unexplained marks. PIC/S tells inspectors to check for unexplained symbols or entries, and for ditto marks.³

To stop a page being quietly rewritten, EMA asks for paper systems designed against unauthorised re-creation of GMP data: blank forms with a unique reference and version, issue traced through a bound logbook with numbered pages or a sequential issue number, and copies marked with a secure stamp or a paper colour not available in working areas.⁷

4Is a reason always required?

The sources differ, which is why procedures differ. EU GMP Chapter 4 and PIC/S ask for the reason “where appropriate”, and PIC/S expects the reasons for changes to critical data to be recorded and verified.¹³ ICH Q7 asks for corrections to be dated and signed, and does not mention a reason.² For computerised systems, Annex 11 asks for the reason to be documented for every change or deletion of GMP-relevant data.⁴

FDA’s good laboratory practice rule for nonclinical studies is stricter. Under 21 CFR 58.130(e), any change in entries “shall indicate the reason for such change”, on paper and in automated systems, and is dated and signed. That rule governs nonclinical laboratory studies, not GMP batch records.⁸

PIC/S expects the good documentation procedure to specify how amendments to paper records are recorded.³ For paper records, a procedure can meet all of these sources by requiring a reason for every change to critical data and setting out which other corrections need only a signature and date.

5Corrections in electronic batch records.

Part 11 requires secure, computer-generated, time-stamped audit trails of operator entries and actions that create, modify or delete electronic records. Changes must not obscure what was recorded before, and the audit trail is kept for at least as long as the record.⁵ Annex 11 asks systems to record the identity of people entering, changing, confirming or deleting data, with the date and time, to document the reason for changes to GMP-relevant data and, for records supporting batch release, to be able to print whether any data has been changed since the original entry.⁴

FDA describes audit trail review as “similar to assessing cross-outs on paper”: whoever reviews the record reviews the audit trail of changes to its data along with it.⁶ On paper, PIC/S includes the correction checks in its expectations for verifying a record.³

6How it runs in Seal.

In Seal’s electronic batch records, a correction is one of the abnormal paths with its own permissions, rationale, evidence and approval rules. Manual entries keep their user, time, unit and correction history, and the audit history preserves original and changed values, reasons, users and times, for administrative configuration as well as operator fields.

Where records are still on paper, Neil reads scanned paper records into Seal, including what was struck through and whether a correction was made the way your procedure requires, and sends anything unclear to a person. Document control can be configured to serve the effective version of each form at the point of use, with controlled copies tracked and reconciled.