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Review by Exception (RBE) is an approach in Electronic Batch Record (EBR) systems that enables quality-assurance teams to focus on unusual records, deviations, out-of-limit values, missing approvals, and critical changes flagged by the system instead of reviewing every line of a batch record with equal intensity. Particularly in highly regulated manufacturing, it can make batch review faster, more focused, and more reliable.
In paper-based batch records, QA teams often check hundreds of pages of documents individually. Checks such as missing signatures, correct dates, calculation errors, and out-of-limit values are performed manually. In EBR systems, however, most of these checks are performed automatically by the system. This allows the QA team to focus only on exceptions that require attention. Centra Electronic Batch Record EBR solution supports a more controlled and audit-ready review of batch records with its Review by Exception approach.
The Basic Logic of the Review by Exception Approach
What is Review by Exception?
Review by Exception is a principle in the EBR system where all records generated during production are pre-checked by the system, and only problematic, unusual, or quality-critical records are shown to the QA team. In this approach, the QA team does not ignore all data; however, they direct their time to the most critical areas.
What is the main purpose of RBE?
The main goal is to prevent the quality assurance team from wasting time on mechanical checks and to allow them to focus their expertise on areas that truly require quality decisions. This makes the batch review process both faster and more meaningful.
How does RBE work within EBR?
The EBR system continuously monitors data entered during production, electronic signatures, timestamps, limits, approval flows, and deviation records. If a value falls outside the defined limit, a required field is left blank, user authorization is insufficient, or an operation is performed outside the expected sequence, the system marks it as an exception.
How does the system make the exception visible?
Exceptions are typically displayed on the QA screen as a separate list, warning card, colored status label, or filterable report. This eliminates the need for the QA user to search for problematic areas among hundreds of normal records.
What is the difference between paper record review and RBE (Review by Exception)?
In paper record review, the QA team manually checks all pages. This process is lengthy, tedious, and prone to human error. In the RBE approach, however, the system automatically flags issues such as missing signatures, calculation errors, out-of-limit values, late entries, data changes, and deviation links. The QA team then focuses directly on these areas.
Does RBE completely eliminate paper control?
Not entirely. RBE changes the control approach. QA is still responsible for batch recording; however, instead of reviewing the entire record with the same intensity, it quickly passes over records that the system reliably verifies and thoroughly evaluates fields containing exceptions.
What exceptions does RBE show?
The RBE system can display different types of exceptions, such as out-of-limit process values, missing electronic signatures, delayed data entry, unauthorized transaction attempts, manual data corrections, deviation records, CAPA connections, unexpected equipment usage, incorrect material selection, or quality control discrepancies.
Do all exceptions have equal importance?
No. While some exceptions may have a critical quality impact, others may only require documentation correction. Therefore, classifying exceptions by risk level on the RBE screen is important. The distinction between critical, major, and minor makes it easier for the QA team to prioritize.
What is its impact on the QA process?
Review by Exception (RBE) changes the way the QA team works. In paper-based systems, a significant amount of QA time is spent on page completeness, signature checking, and manual calculation verification. With RBE, most of these checks are done by the system. QA can focus more on deviation assessment, process suitability, and batch release preparation.
What is the biggest gain from a QA perspective?
The biggest gain is time. However, it's not just about reducing time, but also about improving the quality of inspection. The QA team performs fewer mechanical checks and conducts more quality-focused analyses. This increases the maturity of the quality system.
Frequently Asked Questions about Review by Exception
Why is RBE important in terms of validation and GMP?
For RBE to be reliable, the system must be validated to ensure it is functioning correctly. This is because the QA team relies on the exception list for review. Therefore, it must be proven through testing that the system correctly checks limits, detects missing signatures, maintains a complete audit trail, and correctly classifies exceptions.
How can RBE be defended in an audit?
To support the RBE (Review by Exception) approach in the audit, system validation logs, user authorizations, audit trails, electronic signature checks, and test scenarios can be presented. The auditor should be clearly informed about which exceptions the system detected and how.
Will RBE speed up the release of the party?
Yes, a well-designed RBE (Review by Exception) structure can accelerate the batch review and release process. Instead of manually scanning all records, the QA team focuses directly on high-risk areas. This reduces record review time, makes it easier to identify deficiencies, and allows for faster batch release preparation.
Does speed increase the risk to quality?
No, if the system is properly validated, speed does not increase the risk of quality. On the contrary, the risk of quality may decrease because critical areas become more visible. The important thing here is that RBE is designed not just as a time-saving tool, but as a risk-based quality inspection approach.
Does RBE hide every record?
No. RBE does not mean hiding normal records. All records are stored in the system and are accessible when needed. RBE only highlights exceptions during QA's initial review screen. QA can open the entire batch record in detail and review any step if they wish.
Why is this distinction important?
Because, from an audit perspective, all records must be accessible. RBE doesn't reduce data retention; it changes the priority of review. Normal records are maintained in the background, while exceptions are brought to the decision-maker's attention.
How to connect RBE reporting and ePQR?
Exceptions flagged during Review by Exception can later be used in trend analysis and ePQR processes. For example, frequently recurring limit warnings on a particular line, increasing deviations in a specific product group, or concentrated manual corrections in a particular operation can provide data for the annual quality assessment.
Is RBE only used for a single batch?
No. RBE is primarily used in single-batch review processes; however, the accumulated exception data also constitutes a valuable resource for process improvement, CAPA planning, identifying training needs, and evaluating quality trends.
How does Centra EBR support the RBE process?
Centra EBR can support the Review by Exception approach with its limit control, electronic signature, authorization, audit trail, mandatory field management, deviation linkage, and reporting structures. This structure allows QA teams to evaluate batch records faster, more transparently, and in a more risk-focused manner.
What should businesses do to evaluate the RBE approach?
Businesses should first analyze current batch review times, the most common logging errors, deviation types, and QA workload. Then, they should determine which exceptions will be automatically caught by the system. To integrate the Review by Exception structure into the EBR process, you can contact Centra via their information page.
