Change Activity ID

I would suggest using a gloabl change to do it. What do you want to do  ? Change form what to what  ?

Hi Thomas

You could use 

<Go to edit

< Renumber activity ID's

I am using P6 8.4

Regards

Johannes

Hi.

You can use the Renumbering Activity ID function in P6.

You can follow instruction here https://doduykhuong.com/2016/05/27/renumbering-activity-id-in-primavera-p6/

Adding a new activity should not be a problem, unless you are using a sequential scheme that increments each activity by one.  I usually will number my activities incrementing by 10, then if I have to add something additional, I will slip in a +5 activity number, or +2 or ? (i.e. C-10-1400, C-10-1410, slip in C-10-1405)

It sounds as though you have a requirement that I've seen in some scheduling specifications that suggests you don't renumber any approved activities or delete and re-use the number.  Another trick I've used when I need to split an existing activity is to copy and paste the activity, and then use the same activity number on the new activitiy, but append a decimal. So, sorted by activity number I'll see C-10-1400 and right after C-10-1400.01.