How To Fix MN494 - Missing index entry has been created retrospectively

SAP Error Message - Details

• Message type: E = Error

• Message class: MN - Message class for subsequent settlement (Purchasing)

• Message number: 494

• Message text: Missing index entry has been created retrospectively

What causes this issue?

When a purchase order, material document or billing document is posted,
the business volume data is updated for the purposes of
<DS:GLOS.3526C095AFAB52B9E10000009B38F974>subsequent settlement</>
(depending on the time of update).
This is recorded in an index, which means the document item is logged
(see "Detailed statement" function).
One of these index entries is missing for purchasing document &V1&,
item &V2& (document for which the price determination was performed).

System Response

The index entry has been recreated and posted using an automatic
correction mechanism if you performed a function that changes the
business volume data.

How to fix this error?

Check whether the document item for subsequent settlement is relevant,
and that business volumes have been updated correctly.
If the message relates to a function that does not change the business
volume data (for example, update simulation), you may have to execute
the function "Subsequent business volume data" to post the missing
entry and to correct the business volume data.
If the business volume data is not correct, you may have to recompile
the business volume data and incomes.
For information on the rebate arrangement number and the number of the
document concerned (purchase order, scheduling agreement, material
document, billing document), see the log.
For internal purposes: the condition record involved has the number
&V3&.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MN494 - Missing index entry has been created retrospectively ?

  The SAP error message MN494, which states "Missing index entry has been created retrospectively," typically occurs in the context of inventory management and material movements. This error indicates that there is a discrepancy in the inventory index, often due to missing entries that should have been created during material transactions.
  Cause:
  
  Delayed Posting: The error can occur if material documents are posted after the inventory index has already been updated, leading to missing entries.
  Batch Input Issues: If batch input sessions are not processed correctly, it can lead to inconsistencies in the index.
  Data Consistency Issues: If there are inconsistencies in the database or if the system was not able to create index entries during a transaction due to a temporary issue.
  Custom Developments: Custom programs or enhancements that manipulate inventory data may inadvertently cause this issue.
  
  Solution:
  
  Reprocess the Material Document: If the error is due to a delayed posting, reprocessing the material document can help create the missing index entries.
  Run Inventory Reconciliation: Use transaction codes like MB5B or MB5C to check for inconsistencies and reconcile inventory.
  Check Batch Input Sessions: If batch input sessions are involved, ensure that they are processed correctly and without errors.
  Use Report RMMMBR00: This report can be used to regenerate the index entries for materials. Execute this report to create the missing index entries retrospectively.
  Check for Custom Code: If there are custom developments, review the code to ensure it is not interfering with standard SAP processes.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MB1A, MB1B, MB1C, and MB5B for inventory management.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error. SAP Notes can provide specific guidance or fixes.
  System Logs: Review system logs (transaction SLG1) for any additional error messages or warnings that may provide more context about the issue.
  Documentation: Refer to SAP documentation for inventory management and material movements to understand the expected behavior and processes.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or reach out to SAP support for further assistance.