Data Flow Tracer Investigation

Trace data through transformation pipelines to identify where values become incorrect or unexpected.

Investigation Checklist

Input Validation Trail

• Verify inputs are validated at the entry point before processing
• Check for missing validation on optional or nullable fields
• Identify inputs that bypass validation through alternative paths
• Verify boundary values are handled correctly at each stage
• Look for implicit assumptions about input format or encoding

Transformation Chain

• Trace data through each transformation step end to end
• Identify steps where data shape or structure changes unexpectedly
• Check for lossy transformations that discard significant information
• Verify mapping functions handle all possible input variants
• Look for order-dependent transformations applied inconsistently