SOC 2 PI1.2: System Input Controls
PI1.2 requires organizations to establish policies and procedures that govern how data enters their systems—ensuring every input is complete, accurate, and traceable. Without proper input controls, even minor data errors compound across your entire processing chain, undermining the integrity commitments you make to customers. This control is foundational to demonstrating that your systems reliably produce correct outputs.
What this means
System input controls are the mechanisms you use to validate and verify data before it enters your critical systems. This includes defining which data fields are required, establishing accuracy thresholds, implementing automated validation rules, and requiring authorization for manual entries. The goal is to prevent incomplete or incorrect data from corrupting your business processes, financial records, or customer-facing outputs. Effective input controls reduce manual review burden, catch errors early, and create an auditable trail of who entered what, when, and whether it passed validation.
How to comply
- 1.Document input requirements and validation rules for each critical system, including mandatory fields, acceptable formats, and range checks
- 2.Implement automated validation controls that reject or flag non-compliant inputs before they enter the system
- 3.Define authorization procedures for manual data entry, including who can submit inputs and what approvals are required
- 4.Establish error handling workflows that log rejected inputs, notify responsible parties, and track remediation
- 5.Conduct regular testing of input controls to verify they catch errors and maintain data integrity
- 6.Train staff on proper input procedures and the reasons behind validation rules
- 7.Maintain audit logs showing all inputs, validation results, and any overrides or exceptions
Evidence auditors look for
- System input validation rule documentation showing field requirements, data types, and acceptable ranges
- Evidence of automated validation tests (e.g., unit tests, integration tests) that verify input controls function correctly
- Authorization matrices defining which users can submit inputs for each critical system
- Sample system logs or audit trails showing rejected and accepted inputs with timestamps and validation results
- Error handling procedures and examples of corrected invalid inputs
- Training materials and completion records for staff handling system inputs
- Test results from input control effectiveness testing (e.g., attempts to enter invalid data that were successfully blocked)
Frequently asked questions
When will FAQs be available?
The FAQ for this control is currently being prepared.
GRCWatch's automated control testing module monitors your system input validation rules in real time and generates audit-ready reports showing which inputs passed validation, which were rejected, and who authorized exceptions—eliminating manual log review and speeding up your SOC 2 readiness.
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