Milestone Dependency Validation
=IF(MAXIFS($C:$C,$B:$B,A2)>D2,"Invalid","Valid")ADVERTISEMENT - IN-ARTICLE
Implementation Guide
This task allows project managers to validate milestone dependencies by ensuring predecessor completion dates do not exceed successor start dates. It helps identify logical sequencing errors early in planning. The formula supports complex schedules without requiring specialized project tools. When paired with conditional formatting, invalid dependencies become immediately visible. This improves schedule quality and stakeholder confidence. The method is especially useful for projects managed in Excel due to tool constraints or simplicity requirements.
💡 Expert Q&A Insights
Q: Can this handle multiple predecessors?
Yes, MAXIFS evaluates the latest predecessor date. |
Q: Does this replace critical path analysis?
No, it complements basic schedule validation.