How To Fix CNV_PE_UI241 - Minimum RFC block size is 1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE_UI -

• Message number: 241

• Message text: Minimum RFC block size is 1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE_UI241 - Minimum RFC block size is 1 ?

  The SAP error message "CNV_PE_UI241 Minimum RFC block size is 1" typically occurs in the context of data migration or conversion processes, particularly when using the SAP Landscape Transformation (SLT) or other data migration tools. This error indicates that the Remote Function Call (RFC) block size is set to a value that is not acceptable for the operation being performed.
  Cause:
  
  RFC Configuration: The error is often caused by an incorrect configuration of the RFC settings in the SAP system. The minimum block size for RFC calls must be set to at least 1.
  System Parameters: The system parameters related to RFC communication may not be properly configured, leading to this error.
  Data Migration Settings: If you are using a specific tool or program for data migration, it may have its own settings that need to be adjusted.
  
  Solution:
  
  
  Check RFC Settings:
  
  Go to transaction RZ10 to check the profile parameters.
  Look for the parameter rfc/blocksize and ensure it is set to a value of at least 1. If it is set to 0 or a negative value, change it to 1 or higher.
  Save the changes and restart the SAP system for the changes to take effect.
  
  
  
  Adjust Data Migration Tool Settings:
  
  If you are using a specific data migration tool, check its configuration settings to ensure that the RFC block size is set correctly.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation for the specific tool or process you are using to ensure that all settings are configured correctly.
  
  
  
  System Restart:
  
  After making changes to the RFC settings, a system restart may be necessary for the changes to take effect.
  
  
  
  Check for Updates:
  
  Ensure that your SAP system is up to date with the latest patches and updates, as this may resolve underlying issues related to RFC communication.
  
  
  
  Related Information:
  
  RFC (Remote Function Call): A protocol used in SAP systems to enable communication between different SAP systems or between SAP and non-SAP systems.
  SAP Notes: Check SAP Notes for any specific guidance or patches related to this error message. You can search for relevant notes in the SAP Support Portal.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RZ10 (Profile Maintenance), SM59 (RFC Destinations), and ST22 (Dump Analysis) for troubleshooting.
  
  If the issue persists after following these steps, consider reaching out to SAP support or consulting with an SAP Basis administrator for further assistance.