Activity ID Prefix
Activity ID Prefix field
The series of initial letters, numeric digits, or special characters you want P6 to use to auto-number all the activities in a given project. By default, this field can contain 1 to 20 characters.
In order to identify and track activities, P6 assigns each activity a unique Activity ID that is the result of joining the Activity ID Prefix with the Activity ID Suffix and then adding an Increment value.
For example, a prefix of
PROJ-A# combined with a suffix of
2500 and an Increment of
5 will yield the following activity IDs:
PROJ-A#2500,
PROJ-A#2505, etc.