How To Fix CNV_OM_PRESEL304 - Unexpected error when scheduling preselection tasks.

CNV_OM_PRESEL304 - Overview

• Message type: E = Error

• Message class: CNV_OM_PRESEL - Messages for LT Object Based Preselection

• Message number: 304

• Message text: Unexpected error when scheduling preselection tasks.

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.

CNV_OM_PRESEL304 - Details

• The SAP error message CNV_OM_PRESEL304 indicates that there was an unexpected error when trying to schedule preselection tasks in the context of a data migration or conversion process, typically associated with the SAP S/4HANA Migration Cockpit or other data migration tools.
  Possible Causes:
  
  
  Configuration Issues: Incorrect or incomplete configuration settings in the migration cockpit or related tools.
  Authorization Problems: The user executing the task may not have the necessary authorizations to schedule preselection tasks.
  System Performance: Insufficient system resources (CPU, memory, etc.) may lead to unexpected errors during task scheduling.
  Data Issues: Problems with the data being processed, such as inconsistencies or invalid entries, can cause errors.
  Software Bugs: There may be bugs in the version of the software being used, which could lead to unexpected behavior.
  
  Solutions:
  
  Check Configuration: Review the configuration settings for the migration cockpit or the specific data migration tool you are using. Ensure that all necessary parameters are correctly set.
  User Authorizations: Verify that