How To Fix IUUC_MAIN131 - Data class &1 not assigned to a valid table space

SAP Error Message - Details

• Message type: E = Error

• Message class: IUUC_MAIN - IUUC: Main Message class

• Message number: 131

• Message text: Data class &1 not assigned to a valid table space

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 IUUC_MAIN131 - Data class &1 not assigned to a valid table space ?

  The SAP error message IUUC_MAIN131 indicates that a data class is not assigned to a valid table space. This typically occurs in the context of database table management, particularly when working with the SAP Landscape Transformation (SLT) replication or when configuring database tables in the SAP system.
  Cause:
  The error is usually caused by one of the following reasons:
  
  Data Class Configuration: The data class specified for a table is not correctly mapped to a valid table space in the database.
  Missing Table Space: The table space that should correspond to the data class does not exist or is not properly configured in the database.
  Database Configuration Issues: There may be issues with the database configuration or the connection between SAP and the database.
  
  Solution:
  To resolve the IUUC_MAIN131 error, you can follow these steps:
  
  
  Check Data Class Assignment:
  
  Go to the Data Dictionary (transaction SE11) and check the data class assigned to the table that is causing the error.
  Ensure that the data class is correctly assigned to a valid table space.
  
  
  
  Verify Table Space Configuration:
  
  Check the database to ensure that the table space corresponding to the data class exists.
  If the table space does not exist, you may need to create it in the database.
  
  
  
  Update Table Space Assignment:
  
  If the data class is incorrectly assigned, you can change the assignment in the Data Dictionary.
  Use transaction SE11 to modify the table definition and assign the correct data class that corresponds to an existing table space.
  
  
  
  Database Administration:
  
  If you have access to the database administration tools, verify the configuration of the table spaces and ensure they are properly set up.
  Check for any database-specific issues that might be causing the error.
  
  
  
  Transport Requests:
  
  If changes were made in a development environment, ensure that the changes are transported to the production environment correctly.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific version of SAP you are using for any additional guidance or known issues.
  
  
  
  Related Information:
  
  
  Data Classes: In SAP, data classes define how data is stored in the database. Common data classes include:
  
  Master Data: For storing master data.
  Transaction Data: For storing transaction data.
  Organization Data: For storing organizational data.
  
  
  
  Table Spaces: Table spaces are database-specific structures that define how data is stored on disk. Each data class should be mapped to a specific table space.
  
  
  SAP Notes: Check SAP Notes for any specific fixes or recommendations related to this error message. You can search for the error message number in the SAP Support Portal.
  
  
  By following these steps, you should be able to identify and resolve the IUUC_MAIN131 error in your SAP system. If the issue persists, consider reaching out to your SAP Basis team or SAP support for further assistance.