Jobs Not Scheduling At All!

This “Nullable object must have a value” seems to be caused by bad data, such as :

  • missing the Scheduling Relation on an operation (Finish to Start, etc…)
  • job-to-job relationship and the other job was never scheduled
  • Just run data regen/recycle and the problem might fix itself
  • You can try to remove the job from schedule (via job entry) and schedule it back, might work
  • Weird estimated hours

You’ll have to dig to find the actual problem. Here are some posts about the same issue:

2 Likes