Predecessor relationships
Predecessor relationships indicate when successor work records and tasks can begin to ensure that tasks are completed in a designated order.
You can define the following relationships:
| Relationship | Description |
|---|---|
| Finish-to-finish | When the status of a predecessor changes to COMP (Complete), its successor changes to INPRG (In Progress). You can change the status of the successor. However, you can only change the status of the successor to COMP if the status of the predecessor is COMP or beyond. |
| Finish-to-start | When the status of a predecessor changes to COMP (Complete), its successor changes to INPRG (In Progress). The status of the successor cannot be changed to INPRG until the status of the predecessor is COMP. |
| Start-to-finish | When the status of a predecessor status changes to INPRG (In Progress), the status of its successor changes to INPRG. You can change the status of the successor. However, you can only change the status of the successor to COMP (Complete), if the status of the predecessor is INPRG or beyond. |
| Start-to-start | When the status of a predecessor status changes to INPRG (In Progress), the status of its successor changes to INPRG. The status of the successor cannot be changed to INPRG until the status of the predecessor is INPRG. |
Your work record statuses might be different, depending on the values that you defined in the Organizations application.
For example, Work Order 1 (WO1) has a Finish-to-start relationship with Work Order 2 (WO2). WO1 contains three tasks, the duration of which total 12 hours. WO2 cannot start until all tasks for WO1 are complete (12 hours). The status of WO2 changes to INPRG when all three tasks for WO1 are complete, making WO1 complete.
Lead and Lag time do not affect status changes that occur through flow control.