How To Fix CNV_OM_PRESEL303 - Communication failure: &1

CNV_OM_PRESEL303 - Overview

• Message type: E = Error

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

• Message number: 303

• Message text: Communication failure: &1

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.

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CNV_OM_PRESEL303 - Details

• The SAP error message CNV_OM_PRESEL303 with the description "Communication failure: &1" typically occurs during data migration or conversion processes, particularly when using the SAP Landscape Transformation (SLT) or other data migration tools. This error indicates that there is a communication issue between the source and target systems or within the data migration framework itself.
  Causes:
  
  Network Issues: There may be network connectivity problems between the source and target systems.
  Configuration Errors: Incorrect configuration settings in the data migration tool or in the SAP systems can lead to communication failures.
  Authorization Issues: The user or service account used for the migration may not have the necessary permissions to access the required data.
  Service Availability: The required services or background jobs may not be running or may have failed.
  Timeouts: Long-running processes may exceed timeout settings, leading to communication failures.
  Data Format Issues: Incompatibilities in data formats or structures between the source and target systems can also cause communication