Products > PSOP > Documentation How does PSOP handle relationships to activities in other projects? It is possible in P3e to define a relationship between two activities that are in different projects. For example, you might have a finish to start relationship between an activity in project A and one in project B. If both projects are leveled simultaneously, PSOP will handle the relationship correctly. When only one of the projects is leveled in PSOP, certain types of relationships are ignored. Relationships to predecessor activities in other projects will be honored as long as the activity in the project being leveled does not have an as late as possible constraint. Relationships to successor activities in other projects will be ignored. P3e handles constraints to projects not being leveled in the same way. PSOP will produce a warning message if a relationship to an activity in another project had to be ignored. Back to FAQ