How To Fix EU356 - Cannot determine initial class; Select correct transaction type

SAP Error Message - Details

• Message type: E = Error

• Message class: EU - Development Environment

• Message number: 356

• Message text: Cannot determine initial class; Select correct transaction type

What causes this issue?

In an object orientation transaction the start object is the method of
a class. No class is specified in the transaction.

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?

Check that the transaction is not an obsolete transaction with an
invalid type ID. Before implementation of the object orientation
transaction, this is not important. If the transaction is an obsolete
transaction, change the transaction type (in the Edit menu), if not,
enter a start class.

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 EU356 - Cannot determine initial class; Select correct transaction type ?

  The SAP error message EU356: Cannot determine initial class; Select correct transaction type typically occurs in the context of SAP's Electronic Data Interchange (EDI) or when dealing with document types in the SAP system. This error indicates that the system is unable to determine the appropriate initial class for a transaction due to a missing or incorrect configuration.
  Causes:
  
  Incorrect Transaction Type: The transaction type being used may not be correctly defined in the system or may not correspond to the expected initial class.
  Missing Configuration: The necessary configuration for the transaction type may not be set up in the system, leading to the inability to determine the initial class.
  Data Inconsistencies: There may be inconsistencies in the data being processed, such as missing fields or incorrect values that prevent the system from determining the correct class.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to access certain transaction types or classes.
  
  Solutions:
  
  
  Check Transaction Type Configuration:
  
  Go to the relevant configuration settings in SAP (e.g., SPRO) and verify that the transaction type is correctly defined.
  Ensure that the transaction type is linked to the appropriate initial class.
  
  
  
  Review Master Data:
  
  Check the master data related to the transaction type to ensure that all required fields are filled out correctly.
  Look for any missing or incorrect entries that could lead to this error.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help files related to the specific module you are working with (e.g., EDI, SD, MM) to understand the expected configurations and settings.
  
  
  
  User Authorizations:
  
  Verify that the user has the necessary authorizations to perform the transaction. If not, consult with your SAP security team to adjust the user's roles and permissions.
  
  
  
  Debugging:
  
  If you have access to debugging tools, you can analyze the program flow to identify where the error is occurring and what data is being processed at that point.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance. Provide them with detailed information about the error, including transaction codes and any relevant logs.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with the transaction codes related to the module you are working with, as they may provide insights into the configuration settings.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide updates and patches that could resolve the issue.
  Community 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 the cause of the error and implement a solution to resolve it.