How To Fix CB302 - The required message characteristic & is missing in the message

SAP Error Message - Details

• Message type: E = Error

• Message class: CB - PP-PI-PMA: Dialog Messages for Process Management

• Message number: 302

• Message text: The required message characteristic & is missing in the message

What causes this issue?

The required message characteristic &V1& is not contained in the
selected process message. The message has not been sent.

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?

RESET N1
Check and correct the definition of the message category
in Customizing
in your control system if the message was sent by an external control
system
Call up the process message for change in the message monitor.
The current Customizing settings are now effective for the process
message.
If necessary, add the missing characteristic.
Send the message.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CB302 - The required message characteristic & is missing in the message ?

  The SAP error message CB302 indicates that a required message characteristic is missing in the message. This error typically occurs in the context of SAP's classification and message management system, particularly when dealing with characteristics in the context of messages or notifications.
  Cause:
  The error can be caused by several factors, including:
  
  Missing Characteristics: The specific message characteristic that is required for processing is not defined or is missing in the system.
  Configuration Issues: There may be a configuration issue in the message management settings or in the classification system.
  Data Entry Errors: Incorrect or incomplete data entry when creating or processing messages can lead to this error.
  Custom Development: If there are custom developments or enhancements in the system, they may not be handling the required characteristics properly.
  
  Solution:
  To resolve the CB302 error, you can take the following steps:
  
  
  Check Message Characteristics:
  
  Go to the relevant configuration settings in SAP (usually in the SPRO transaction) and verify that all required message characteristics are defined.
  Ensure that the characteristic in question is correctly assigned to the message type you are working with.
  
  
  
  Review Configuration:
  
  Check the configuration for message management and classification to ensure that all necessary settings are in place.
  Make sure that the message type and its associated characteristics are correctly configured.
  
  
  
  Data Validation:
  
  Review the data being entered or processed to ensure that all required fields are filled out correctly.
  If you are using a custom program or transaction, ensure that it is correctly populating all required characteristics.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance on the message characteristics and their requirements.
  
  
  
  Debugging:
  
  If you have access to debugging tools, you can trace the execution of the program or transaction to identify where the missing characteristic is 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 such as SPRO (Customizing), CL02 (Change Class), and CL03 (Display Class) for managing characteristics and classes.
  SAP Notes: Check for any SAP Notes related to error CB302, 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.
  
  By following these steps, you should be able to identify and resolve the cause of the CB302 error in your SAP system.