How To Fix MODEL055 - There is no active header table for IO class '&2' in area '&1'

SAP Error Message - Details

• Message type: E = Error

• Message class: MODEL - Modeling

• Message number: 055

• Message text: There is no active header table for IO class '&2' in area '&1'

What causes this issue?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

Check the tabulation for the IO class <(>&<)>V2<(>&<)> and correct it
if necessary.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MODEL055 - There is no active header table for IO class '&2' in area '&1' ?

  The SAP error message MODEL055 indicates that there is no active header table for the specified IO (Internal Order) class in the specified area. This error typically arises in the context of internal order management, particularly when trying to access or process data related to internal orders.
  Cause:
  
  Missing Configuration: The most common cause of this error is that the configuration for the specified IO class in the specified area is incomplete or missing. This could mean that the header table for that IO class has not been defined or activated in the system.
  Incorrect IO Class or Area: The error may also occur if the IO class or area specified in the error message is incorrect or does not exist in the system.
  Data Inconsistency: There may be inconsistencies in the data or configuration that prevent the system from recognizing the header table for the specified IO class.
  
  Solution:
  
  
  Check Configuration:
  
  Go to the configuration settings for internal orders in SAP (Transaction code: OKA0 or OKA1).
  Verify that the header table for the specified IO class and area is correctly defined and active.
  Ensure that the necessary settings for the internal order type are properly configured.
  
  
  
  Verify IO Class and Area:
  
  Double-check the IO class and area you are working with to ensure they are correct.
  You can use transaction codes like KOB1 or KOB2 to check the details of internal orders and their configurations.
  
  
  
  Activate Header Table:
  
  If the header table is not active, you may need to activate it. This can usually be done in the configuration settings for internal orders.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources related to internal orders and the specific IO class you are working with for additional guidance.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the configuration and verifying the details, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as OKA0, OKA1, KOB1, and KOB2 for managing internal orders.
  SAP Notes: Check for any SAP Notes related to the error message MODEL055, as they may provide specific fixes or patches.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify and resolve the issue related to the MODEL055 error message in SAP.