SPM - External dependencies in Project Workspace

[Tommaso2]

Hi all,

When I create an external dependency in Project Workspace the relationship is always Finish to Start and it cannot be modified.

Actually I cannot modify that dependency at all.

Can you please clarify how it works?

Many thanks

[M Iftikhar · Accepted solution]

Hi @Tommaso2 , 

That’s expected behavior in Project Workspace.  

How external dependencies work : 

• You pick a task in the predecessor project to link with a task in the successor project. 

• The system creates shadow tasks (read-only copies) in both projects. These stay in sync with the originals (shadow = true, orig_sys_id points to the source task). 

• It also creates shadow relations in the planned_task_rel_planned_task table to mirror the original relation. 

At this point, only Finish-to-Start is supported as the dependency type for external dependencies, which is why you can’t modify it. That’s by design.

You can see this documented here: Add an external dependency on planning console 

Thanks & Regards,  
Muhammad Iftikhar  
  
If my response helped, please mark it as the accepted solution so others can benefit as well.