Write ACL on planned_start_date works in Work in Progress but not in Review & Deployment

[RGC9]

Hi Community,

I’ve configured a write ACL on change_request.planned_start_date to allow editing only in these states:

• Work in Progress
• Review
• Deployment(custom)

ACL details:

• Operation: Write
• Field: change_request.planned_start_date
• Role: change_manager
• Condition: State is one of Work in Progress or Review or Deployment

Issue:

• ✅ Works correctly in Work in Progress
• ❌ Does not allow editing in Review & Deployment for the same role

Troubleshooting done:

• Verified ACL evaluation using Debug Security Rules (ACL allows write)
• Checked UI Policies and Data Policies — none blocking the field
• Confirmed correct stored state values

This makes me suspect Change‑specific controls (Change State Model or system Business Rules) may be overriding the ACL in Review & Deployment.

Has anyone encountered this behavior, or can confirm the recommended way to control field editability by Change state?

Thanks in advance!

[Mark Manders]

Why are you using ACLs for this? Why not a simple policy? 

Next to that: it sounds really weird to update the planned_start_date when a change is in review.