How To Fix R1520 - Maximum number of dynpro containers reached

SAP Error Message - Details

• Message type: E = Error

• Message class: R1 - Business Partner Messages from S_BUPA_GENERAL

• Message number: 520

• Message text: Maximum number of dynpro containers reached

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message R1520 - Maximum number of dynpro containers reached ?

  The SAP error message R1520, "Maximum number of dynpro containers reached," typically occurs when the number of dynamic programming (dynpro) containers in a particular SAP session exceeds the allowed limit. Dynpro containers are used in SAP GUI for managing user interface elements, and each screen or dialog in an SAP application can create multiple dynpro containers.
  Cause:
  
  Excessive Dynpro Containers: The error is usually caused by a program or transaction that creates too many dynpro containers without properly releasing them. This can happen in custom ABAP programs or even in standard SAP transactions if they are not designed efficiently.
  Long Running Sessions: If a user keeps a session open for an extended period and navigates through many screens, it can lead to the accumulation of dynpro containers.
  Memory Leaks: Poorly designed custom code may lead to memory leaks, where dynpro containers are not released after they are no longer needed.
  
  Solution:
  
  Close Unused Sessions: If you have multiple SAP sessions open, try closing some of them to free up resources.
  Optimize Custom Code: If the error occurs in a custom program, review the code to ensure that dynpro containers are being released properly. Look for any loops or recursive calls that may be creating excessive containers.
  Transaction Redesign: If the error occurs in a standard transaction, consider redesigning the workflow to minimize the number of screens navigated in a single session.
  Increase Dynpro Limit: In some cases, it may be possible to increase the limit of dynpro containers through system parameters, but this should be done with caution and typically requires SAP Basis support.
  Session Management: Encourage users to log off from sessions that are not in use and to avoid keeping sessions open unnecessarily.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific recommendations or patches related to this error. SAP frequently updates its knowledge base with solutions for common issues.
  System Parameters: The maximum number of dynpro containers can be influenced by system parameters. Consult with your SAP Basis team to review and adjust these parameters if necessary.
  Performance Monitoring: Use transaction codes like ST22 (Dump Analysis) and SM21 (System Log) to monitor for any related issues that may provide additional context for the error.
  
  If the problem persists after trying the above solutions, it may be beneficial to engage SAP support for further assistance.