How To Fix SAMQP_MESSAGE029 - Insufficient Flow Cntl window or link credits(Queue- size: &1,length: &2)

SAP Error Message - Details

• Message type: E = Error

• Message class: SAMQP_MESSAGE -

• Message number: 029

• Message text: Insufficient Flow Cntl window or link credits(Queue- size: &1,length: &2)

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message SAMQP_MESSAGE029 - Insufficient Flow Cntl window or link credits(Queue- size: &1,length: &2) ?

  The SAP error message SAMQP_MESSAGE029 indicates that there is an issue with the flow control mechanism in the SAP messaging system, specifically related to insufficient flow control window or link credits. This typically occurs in scenarios involving SAP's Advanced Message Queuing Protocol (AMQP) or when using SAP's messaging services.
  Cause:
  
  
  Insufficient Flow Control Credits: The error suggests that the system has run out of flow control credits, which are necessary for managing the flow of messages between the sender and receiver. This can happen if the sender is sending messages too quickly for the receiver to process them.
  
  
  Queue Size Limitations: The error message also indicates that the queue size has reached its limit, which can prevent new messages from being accepted until some messages are processed or removed.
  
  
  Network Issues: Network latency or interruptions can also contribute to this issue, as they can affect the timely processing of messages.
  
  
  Configuration Issues: Incorrect configuration settings for the messaging system, such as buffer sizes or flow control parameters, can lead to this error.
  
  
  Solution:
  
  
  Increase Flow Control Credits: If possible, adjust the configuration settings to increase the flow control window or link credits. This may involve changing settings in the messaging system or the application that is sending messages.
  
  
  Optimize Message Processing: Ensure that the receiving application is capable of processing messages quickly enough. This may involve optimizing the application code, increasing resources (CPU, memory), or scaling out the application to handle more load.
  
  
  Monitor Queue Size: Regularly monitor the queue size and implement mechanisms to process or purge old messages if they are no longer needed. This can help prevent the queue from reaching its maximum size.
  
  
  Check Network Performance: Investigate any network issues that may be causing delays in message processing. Ensure that the network is stable and has sufficient bandwidth.
  
  
  Review Configuration Settings: Review the configuration settings for the messaging system to ensure they are appropriate for your workload. This may include adjusting buffer sizes, timeout settings, and other relevant parameters.
  
  
  Consult Documentation: Refer to the SAP documentation for specific guidance on configuring the messaging system and handling flow control issues.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  System Logs: Review system logs for any additional error messages or warnings that may provide more context about the issue.
  Performance Monitoring Tools: Utilize performance monitoring tools to analyze the message flow and identify bottlenecks in the system.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.