Data migration and validation from Excel
Problem
Excel files often contain formats, blank values, duplicates, or conventions that do not match the destination system’s rules.
Analysis
Before importing, it helps to define required columns, expected formats, identifiers, and rules for detecting incomplete or inconsistent rows.
Intervention
A cleaning and validation stage is prepared before loading, with clear reports for records requiring review.
Result or learning
For the record: separating validation from import reduces errors and allows correction without changing the destination system.