Can I Change the Unit of Measure (U/M) on a Phase/Cost Type?
Yes — but only if certain conditions are met.
Changing U/M in JC Original Estimates
You can change the unit of measure only if all of the following are true:
The U/M exists in HQ Units of Measure (HQUM)
No change orders exist with source status Job Cost (J) or Interfaced (I) in:
JC Change Order Detail (JCOD)
PM Change Order Lines (PMOL)
Committed costs are zero (Total and Remaining) in JCCP (Cost by Period)
What Happens When the Change Is Allowed
Estimated units are reset to 0.00 if the U/M changes
Projection and forecast units are reset to 0.00
Posted and actual units are updated or reset as needed to match the new U/M
All unit mismatches are corrected to align with the new U/M
Pending Change Orders
Contract U/M
Enter the U/M for the change order item
If it differs from the contract item U/M, a warning appears
Best practice: Create a new contract item for the new U/M
Ignoring the warning means only dollar amounts will update in Job Cost
Estimate U/M
U/Ms are maintained in HQ Units of Measure
U/Ms must match what is set up on PM Project Phases
If they don’t match, a warning will display
This field appears only when:
Estimate is checked
Unit Price pricing method is selected
Approved Change Orders
The U/M defaults from the phase/cost type
If units were entered and you change the U/M to LS (Lump Sum), existing units are set to 0
Summary
U/M changes are allowed only when there is no posted or committed activity
Changing U/M may reset units to maintain data integrity
For change orders, creating a new contract item is the safest approach
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