How To Fix D3046 - RFC: Communication buffer too small

SAP Error Message - Details

• Message type: E = Error

• Message class: D3 - CCMS - DB2 on OS390

• Message number: 046

• Message text: RFC: Communication buffer too small

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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Smart SAP Assistant

• What is the cause and solution for SAP error message D3046 - RFC: Communication buffer too small ?

  The SAP error message D3046, which states "RFC: Communication buffer too small," typically occurs when the size of the communication buffer used for Remote Function Calls (RFC) is insufficient to handle the data being transmitted between the SAP systems or between an SAP system and an external application.
  
  Cause:
  
  Data Size Exceeds Buffer Limit: The data being sent or received exceeds the maximum size that the RFC communication buffer can handle.
  
  Configuration Issues: The RFC destination settings may not be configured correctly, leading to buffer size limitations.
  Network Issues: Network latency or interruptions can also contribute to communication problems, although this is less common for this specific error.
  
  
  Solution:
  
  
  Increase Buffer Size:
  
  You can increase the size of the RFC communication buffer. This is typically done in the SAP system configuration.
  Use transaction code RZ10 to adjust the profile parameters. Look for parameters like rfc/buffer_size and increase its value.
  After making changes, you will need to restart the SAP