How To Fix AJ031 - System expects &1 line item types; actual number: &2

SAP Error Message - Details

• Message type: E = Error

• Message class: AJ - Billing program

• Message number: 031

• Message text: System expects &1 line item types; actual number: &2

What causes this issue?

The variant program expected a certain number of document line item
types. However, the number of document line item types actually defined
for this variant differs from the expected number.

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?

Check how many document line item types have been defined for the
relevant item using transaction EA88.
Also check in rate whether the number of document line item types
defined for this variant matches the expected number.
If everything matches the expected number, then an error has probably
occurred in the billing program.
Otherwise the setting in the system tables for variants is either
incorrect, or the setting changed without the necessary changes being
made in the rate or variant.
In any case, report this error to SAP.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AJ031 - System expects &1 line item types; actual number: &2 ?

  The SAP error message AJ031 indicates a mismatch between the expected number of line item types and the actual number present in a transaction or document. This error typically occurs in the context of financial postings, particularly in the area of asset accounting or when dealing with line items in financial documents.
  Cause:
  The error message AJ031 is triggered when the system expects a certain number of line item types (for example, different categories of transactions such as asset acquisition, depreciation, etc.) but finds a different number of line item types in the document being processed. This can happen due to:
  
  Configuration Issues: The configuration settings for the asset accounting module may not align with the actual transactions being processed.
  Data Entry Errors: Incorrect or incomplete data entry when creating or modifying financial documents.
  Custom Development: If there are custom programs or enhancements that manipulate line items, they may not adhere to the expected structure.
  Missing or Incorrect Master Data: If the master data for assets or accounts is not set up correctly, it can lead to discrepancies in line item types.
  
  Solution:
  To resolve the AJ031 error, you can take the following steps:
  
  
  Check Configuration: Review the configuration settings in the asset accounting module to ensure that they are set up correctly. This includes checking the settings for line item types and ensuring they match the expected values.
  
  
  Review Document: Examine the document or transaction that triggered the error. Ensure that all required line item types are present and correctly entered.
  
  
  Validate Master Data: Ensure that the master data for the relevant accounts and assets is complete and correctly configured. This includes checking account assignments and asset classes.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific details on the expected line item types for the transaction you are processing.
  
  
  Debugging: If you have access to development tools, you may want to debug the transaction to see where the mismatch occurs. This can help identify if there is a custom program or enhancement causing the issue.
  
  
  Contact Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in SAP that pertain to asset accounting, such as AS01 (Create Asset), AS02 (Change Asset), and AS03 (Display Asset).
  SAP Notes: Check for any SAP Notes related to error AJ031, as there may be specific patches or updates that address known issues.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, providing insights or solutions from other users' experiences.
  
  By following these steps, you should be able to identify and resolve the cause of the AJ031 error in your SAP system.