How To Fix RSH_LVLING_CONFLICTS301 - Make sure to schedule Operation &1 before Operation &2.

SAP Error Message - Details

• Message type: E = Error

• Message class: RSH_LVLING_CONFLICTS - Leveling Conflicts (Business Messages)

• Message number: 301

• Message text: Make sure to schedule Operation &1 before Operation &2.

What causes this issue?

A finish-start relationship exists between both operations. However, the
predecessor operation has not yet been scheduled.

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?

Schedule all related operations together to maintain the relationship.
Scheduling related operations independently from each other might result
in a relationship violation.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSH_LVLING_CONFLICTS301 - Make sure to schedule Operation &1 before Operation &2. ?

  The SAP error message RSH_LVLING_CONFLICTS301 indicates a scheduling conflict in the context of production planning or project management. Specifically, it suggests that there is a dependency between two operations, where Operation &1 must be scheduled before Operation &2. This is a common issue in scenarios where operations are interdependent, and the system is enforcing the correct sequence of execution.
  Cause:
  The error occurs due to one of the following reasons:
  
  Dependency Violation: The system has detected that Operation &1 is a predecessor to Operation &2, meaning that Operation &1 must be completed before Operation &2 can start.
  Incorrect Scheduling: The operations may have been scheduled in a way that violates the defined dependencies, possibly due to manual adjustments or incorrect planning.
  Resource Constraints: There may be resource constraints that prevent the operations from being scheduled in the required order.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Operation Dependencies:
  
  Review the routing or task list to confirm the dependencies between the operations. Ensure that the sequence is correctly defined.
  
  
  
  Adjust Scheduling:
  
  Go to the scheduling view of the operations in question and adjust the start and finish dates/times to ensure that Operation &1 is scheduled before Operation &2.
  
  
  
  Review Resource Allocation:
  
  Check if there are any resource constraints that might be affecting the scheduling. Ensure that the resources required for Operation &1 are available before scheduling Operation &2.
  
  
  
  Use the Scheduling Tool:
  
  Utilize SAP's scheduling tools (like the Capacity Planning or Production Planning tools) to automatically adjust the schedule based on the defined dependencies.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance on handling scheduling conflicts in your version of SAP.
  
  
  
  Test Changes:
  
  After making adjustments, test the scheduling again to ensure that the error does not reoccur.
  
  
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like CO02 (Change Production Order) or C223 (Change Routing) to view and modify operations.
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide additional guidance on this error.
  Training: If you frequently encounter scheduling issues, consider training on SAP's production planning and scheduling functionalities to better understand how to manage dependencies and resources.
  
  By following these steps, you should be able to resolve the RSH_LVLING_CONFLICTS301 error and ensure that your operations are scheduled correctly.