How To Fix WXP110 - A planning step cannot be linked to itself

SAP Error Message - Details

• Message type: E = Error

• Message class: WXP - Retail Planning

• Message number: 110

• Message text: A planning step cannot be linked to itself

What causes this issue?

You attempted to link a planning step to the same planning link. This
type of planning step link is not possible.

System Response

The link is not created.

How to fix this error?

Select one of the following procedures:
If you want to define a link between two steps, select <zh>"Link"</>
and draw a line from the source planning step to the target planning
step.
If you want to execute automatic processing for a planning step, go to
the desired planning step in detailed screen and create
<DS:DE.WISP_MASCHPL>automatic planning</>.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WXP110 - A planning step cannot be linked to itself ?

  Certainly! Here's a detailed explanation for the SAP error message WXP110: "A planning step cannot be linked to itself":
  
  Error Message:
  WXP110 - A planning step cannot be linked to itself
  
  Cause:
  This error occurs in SAP Production Planning (PP) or Product Cost Planning (PCP) when you try to create a link (or relationship) between a planning step and itself. In other words, the system prevents you from assigning a planning step as a predecessor or successor to itself because this would create a circular reference or logical inconsistency in the planning sequence.
  Planning steps are used in routing or production versions to define the sequence of operations or steps in production. Linking a step to itself would mean the step depends on itself, which is logically impossible and would cause errors in scheduling or costing.
  
  When does it typically occur?
  
  When maintaining routing or production versions.
  When defining or editing planning steps and their relationships.
  During scheduling or planning activities where dependencies between steps are set.
  When importing or copying routings/planning steps and the system tries to create invalid links.
  
  
  Solution:
  
  
  Check the Planning Step Links:
  
  Review the planning steps in the routing or production version.
  Ensure that no planning step is linked as a predecessor or successor to itself.
  
  
  
  Correct the Link:
  
  Remove or correct the link that points a planning step to itself.
  If you intended to link to a different step, select the correct planning step number.
  
  
  
  Use Transaction Codes:
  
  Use CA02 (Change Routing) or CA03 (Display Routing) to check the sequence of operations.
  In the routing operation overview, check the "Relationships" or "Sequence" tab to verify the links.
  
  
  
  Check for Circular References:
  
  Sometimes, indirect circular references can cause similar errors. Make sure the sequence of planning steps does not form a loop.
  
  
  
  If the error occurs during data upload or migration:
  
  Check the source data for incorrect references.
  Correct the data before uploading.
  
  
  
  
  Additional Information:
  
  Planning Steps: These are detailed steps or operations in a routing that define the production process.
  Linking Planning Steps: Links define the sequence and dependencies between steps, which are crucial for scheduling and costing.
  System Validation: SAP enforces logical consistency to avoid scheduling deadlocks or costing errors.
  Related Transactions: CA01 (Create Routing), CA02 (Change Routing), CA03 (Display Routing), C223 (Maintain Production Versions).
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  WXP110 - A planning step cannot be linked to itself
  
  
  Cause
  Attempt to link a planning step as predecessor or successor to itself
  
  
  Solution
  Remove or correct the self-link in routing/planning step relationships
  
  
  Where to Check
  Routing (CA02), Production Versions (C223)
  
  
  Impact
  Prevents logical inconsistencies in production planning and scheduling
  
  
  
  
  If you need help identifying the exact planning step causing the issue, you can enable debugging or check the detailed error log in the system to find the step number involved.
  
  Let me know if you need assistance with specific transaction steps or further troubleshooting!