How To Fix C2138 - Order &: Subnetwork scheduled backwards

SAP Error Message - Details

• Message type: E = Error

• Message class: C2 - Other messages production orders

• Message number: 138

• Message text: Order &: Subnetwork scheduled backwards

What causes this issue?

Teilnetze im Auftragsnetz werden mit RnckwSrtsterminierung terminiert.
Dies geschieht unabhSngig von der aktuellen Terminierungsart.

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?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message C2138 - Order &: Subnetwork scheduled backwards ?

  The SAP error message C2138, which states "Order &: Subnetwork scheduled backwards," typically occurs in the context of production planning and scheduling within SAP. This error indicates that there is a scheduling conflict where the planned start time of a subnetwork (or operation) is set to occur before its predecessor operation has been completed. This can lead to inconsistencies in the production process, as operations cannot logically start before their prerequisites are finished.
  Causes:
  
  Incorrect Scheduling Parameters: The scheduling parameters for the operations or networks may not be set correctly, leading to backward scheduling.
  Dependencies Not Defined: There may be missing or incorrectly defined dependencies between operations in the network.
  Resource Constraints: Resource availability might not be properly accounted for, causing the system to attempt to schedule operations in an illogical order.
  Manual Changes: Manual adjustments to the scheduling of operations may have inadvertently created a situation where operations are scheduled out of order.
  
  Solutions:
  
  Check Operation