The short version. Two numbers for two different audiences. Cost Code is internal — it’s how your own accounting tracks the money. PCO Number is external — it’s how the GC tracks the potential change order.
Who needs which
Cost Code
Your accounting team. Which bucket in your job cost the hours and material land in.Wrong code → the job costs look fine while one phase quietly bleeds.
PCO Number
The general contractor. Which potential change order this ticket belongs to.Wrong or missing → the GC can’t match your ticket to anything, and it doesn’t make it into the change order.
What goes wrong downstream
Next
Get it signed
An unsigned ticket is worth very little.
Change Orders
Where these tickets end up.