Get Predecessors of a Task along with its Start - Id and End - Id using a single request

Question

My requirement is to fetch all the task links of a Project with Start - Id and End - Id of every task link.

Currently I am only able to fetch LinkId, ProjUid, Lag and Dependency type using REST API:

https://contoso.sharepoint.com/sites/pwa/_api/ProjectServer/Projects('ProjectGUID')/TaskLinks

Then to Get Start - Id and End - Id, I have to again send two additional API requests and it takes a lot of time when I have to fetch a total of 8000+ Task Links in a project with 8500 tasks.

Answer 1

I don't think you can get Predecessors for all tasks in a single request, you can only get predecessor for a specific task

/Tasks('<TaskGUID>')/Predecessors

Additionally, you can also use ProjectData to get all tasks with specific fields

https://contoso.sharepoint.com/sites/pwa/_api/ProjectData/Projects(guid'{project guid}')/Tasks()?$Select=TaskName,TaskId