How To Fix WT253 - Indicates that net change planning is to be used

SAP Error Message - Details

• Message type: E = Error

• Message class: WT - Retail: Replenishment

• Message number: 253

• Message text: Indicates that net change planning is to be used

&USE&
With the net change planning method, only those materials are included
in the planning of replenishments for which there have been changes
relevant to Replenishment since the last planning run. These change may
be, for example, stock changes or replenishment parameter changes.
Net change planning helps improve performance. If you do not use this
method, the planning run analyzes all materials for which Replenishment
is active.
&HINTS&
When the target stock is calculated dynamically, the net-change method
can lead to certain materials being "forgotten".
Example
You start net-change planning for a material where the target stock is
calculated dynamically and activate the net change method.
Due to an increase in forecast sales, the target stock (calculated
dynamically) is higher than in the last replenishment run.
Since no change relevant to replenishment has been made since the last
replenishment run, it is still not taken into account in Replenishment.
You should therefore only use the net change method for materials where
the target stock is calculated dynamically if you are sure that the
material has sold since the last replenishment run (i.e. there has been
a change in stock).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WT253 - Indicates that net change planning is to be used ?

  Certainly! Here's a detailed explanation regarding the SAP error message WT253:
  
  SAP Message WT253: "Net change planning is to be used"
  
  1. Cause
  The message WT253 typically occurs in the context of material requirements planning (MRP) or work scheduling when the system expects net change planning to be used instead of a full planning run.
  
  Net change planning means that only the materials or orders that have changed since the last planning run are planned again.
  The system detects that the current planning mode or parameters are inconsistent with the expected planning strategy.
  This message often appears when you try to execute a planning run with a planning mode that is not compatible with the material master or MRP settings.
  It can also occur if the planning file entries are missing or if the planning horizon or planning mode is incorrectly set.
  
  
  2. Solution
  To resolve the WT253 message, consider the following steps:
  
  
  Use Net Change Planning Mode:
  
  When running MRP, select Net Change Planning (planning mode NEUPL or NETCH) instead of a full planning run (NEUP).
  This ensures that only materials with changes since the last run are planned.
  
  
  
  Check Planning File Entries:
  
  Ensure that the planning file entries exist for the materials you want to plan.
  You can update the planning file entries using transaction MD20 (Create Planning File Entries) or MD21 (Delete Planning File Entries).
  
  
  
  Verify Material Master Settings:
  
  Check the MRP type in the material master (transaction MM02, MRP 1 view).
  Some MRP types require net change planning.
  
  
  
  Review Planning Horizon and Parameters:
  
  Make sure the planning horizon and other parameters are set correctly in the MRP run (transaction MD01, MD02, or MD03).
  
  
  
  Run a Full Planning Run if Needed:
  
  If you want to perform a full planning run, ensure that the system allows it for the material and that the planning file entries are properly maintained.
  
  
  
  
  3. Related Information
  
  
  Transactions:
  
  MD01 - Total Planning (can be set to net change or regenerative)
  MD02 - Single-item, multi-level planning
  MD03 - Single-item, single-level planning
  MD20 - Create Planning File Entries
  MD21 - Delete Planning File Entries
  
  
  
  Planning Modes:
  
  NEUPL - Net Change Planning in the Planning Horizon
  NETCH - Net Change Planning
  NEUP - Regenerative Planning (full planning run)
  
  
  
  SAP Notes and Documentation:
  
  Check SAP Notes related to MRP and planning file entries if the problem persists.
  SAP Help Portal on MRP and planning strategies.
  
  
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Message
  WT253 - Net change planning is to be used
  
  
  Cause
  Planning mode incompatible with material settings; missing planning file entries; incorrect planning parameters
  
  
  Solution
  Use net change planning mode; update planning file entries; verify material master MRP type; adjust planning parameters
  
  
  Related Tcodes
  MD01, MD02, MD03, MD20, MD21
  
  
  
  
  If you provide the exact context or transaction where the message appears, I can help you with more tailored advice.