How To Fix MCW_AA126 - No OLTP field names have been specified. See long text.

SAP Error Message - Details

• Message type: E = Error

• Message class: MCW_AA - Messages for BW Interface Analytical Applications

• Message number: 126

• Message text: No OLTP field names have been specified. See long text.

What causes this issue?

You must specify an OLTP field name so that the query can later be used
in an analytical application.
When you create new query fields, this field name may remain blank.
This is because the system cannot propose a default due to the current
system relationship between OLTP and BW.
In order to interpret the data returned by the query &V1&, you must
enter a field name here.

How to fix this error?

Specify a name as suggested by the documentation for the analytical
application this query will be used in.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MCW_AA126 - No OLTP field names have been specified. See long text. ?

  The SAP error message MCW_AA126 indicates that there are no OLTP (Online Transaction Processing) field names specified in the context where the error is occurring. This typically happens in the context of data extraction or reporting, particularly when working with the Asset Accounting (FI-AA) module or similar areas where data is being pulled from the database.
  Cause:
  
  Missing Field Names: The most common cause of this error is that the configuration or the selection criteria for the report or data extraction does not include any OLTP field names. This could be due to a misconfiguration in the report settings or the data extraction process.
  Incorrect Data Source: The data source being used may not be correctly set up to provide the necessary OLTP fields.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to access the required fields, leading to this error.
  
  Solution:
  
  Check Configuration: Review the configuration settings for the report or data extraction process. Ensure that the OLTP field names are correctly specified in the selection criteria.
  Specify Field Names: If you are developing a custom report or extraction, make sure to explicitly specify the OLTP field names that you want to include in your selection.
  Review Data Source: Ensure that the data source you are using is appropriate and contains the necessary fields. If you are using a custom data source, verify that it is correctly defined.
  User Authorizations: Check the user authorizations to ensure that the user has the necessary permissions to access the required fields. If not, work with your SAP security team to grant the appropriate access.
  Consult Documentation: Refer to the SAP documentation or help files related to the specific transaction or report you are working with for additional guidance on required fields.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may be using transaction codes like S_ALR_87012086 (Asset Balances) or S_ALR_87012087 (Asset History Sheet) which may require specific field configurations.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Community Forums: Consider searching or posting in SAP community forums or SAP support channels for additional insights from other users who may have encountered the same issue.
  
  By following these steps, you should be able to resolve the error and successfully extract or report the required data.