How To Fix TU171 - Schedule records still exist for MRU &1 of dynamic scheduling

TU171 - Overview

• Message type: E = Error

• Message class: TU - Billing/Scheduling/Budget Billing

• Message number: 171

• Message text: Schedule records still exist for MRU &1 of dynamic scheduling

What causes this issue?

You are processing a meter reading unit from dynamic scheduling. You can
only process dynamic schedules with the transactions <LS>Delete and
Create Dynamic Schedule Records</> (E1DY) and <LS>Change/Display Dynamic
Schedule Records</> (E2DY).

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

After you have changed the meter reading unit, you must use the
transaction E1DY to generate new schedule records for the modified meter
reading unit and the corresponding dynamic period. At the same time, the
existing schedule records are deleted.
You can only use transaction E1DY to delete the schedule records of a
meter reading unit if the schedule records (selected via the dynamic
period) do not have any meter reading orders. Delete any meter reading
orders before you start this process.

Error message extract from SAP system. Copyright SAP SE.

TU171 - Details

• The SAP error message TU171 indicates that there are still schedule records associated with a specific Material Requirements Planning (MRP) area or dynamic scheduling object, which prevents certain operations from being completed. This error typically arises in the context of production planning and scheduling within the SAP system.
  
  Cause:
  The error occurs when there are still active scheduling records for a specific MRP area or dynamic scheduling object. This can happen due to:
  
  Incomplete Deletion: Previous attempts to delete or change scheduling records were not fully completed.
  Open Orders: There are open production orders, purchase orders, or planned orders that reference the MRU (Material Resource Unit).
  Locked Records: The records may be locked by another process or user, preventing their deletion or modification.
  
  Configuration Issues: Incorrect configuration settings in the MRP or scheduling parameters.
  
  
  Solution:
  To resolve the TU171 error, you can follow these steps:
  
  
  Check for Open Orders:
  
  Use transaction codes like CO03 (Display Production Order) or ME23N (Display