How To Fix KB021 - Reading data...

SAP Error Message - Details

• Message type: E = Error

• Message class: KB - Controlling: Reporting

• Message number: 021

• Message text: Reading data...

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message KB021 - Reading data... ?

  The SAP error message KB021 typically indicates an issue related to reading data from the database, often in the context of cost center accounting or internal orders. This error can arise due to various reasons, including data inconsistencies, missing entries, or issues with the configuration of the system.
  Causes of Error KB021
  
  Missing Data: The system may be trying to access data that does not exist or has been deleted.
  Data Inconsistencies: There may be inconsistencies in the database, such as mismatched keys or corrupted entries.
  Authorization Issues: The user may not have the necessary authorizations to access the required data.
  Configuration Errors: Incorrect configuration settings in the controlling module or related areas can lead to this error.
  Technical Issues: Problems with the database or the SAP application server can also cause this error.
  
  Solutions
  
  
  Check Data Integrity:
  
  Verify that the data you are trying to access exists in the database.
  Use transaction codes like SE16 or SE11 to check the relevant tables for missing or inconsistent entries.
  
  
  
  Review Authorizations:
  
  Ensure that the user has the necessary authorizations to access the data. You can check this using transaction SU53 to analyze authorization failures.
  
  
  
  Configuration Review:
  
  Review the configuration settings in the controlling module (CO) to ensure they are set up correctly. This may involve checking cost center settings, internal order settings, or other related configurations.
  
  
  
  Database Consistency Check:
  
  Run consistency checks on the database to identify and resolve any inconsistencies. This may involve using transaction codes like DB02 or DBACOCKPIT.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates available that resolve known issues.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance. Provide them with detailed information about the error, including the transaction code and any relevant logs.
  
  
  
  Related Information
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE16 (Data Browser), SE11 (Data Dictionary), and SU53 (Authorization Check).
  SAP Notes: Regularly check for updates and notes related to your SAP version, as these can provide fixes or workarounds for known issues.
  Documentation: Review SAP documentation for the controlling module to understand the expected data flow and configuration settings.
  
  By following these steps, you should be able to diagnose and resolve the KB021 error in SAP.