How To Fix B1733 - Resetting block size for message type & has failed

SAP Error Message - Details

• Message type: E = Error

• Message class: B1 - ALE group messages

• Message number: 733

• Message text: Resetting block size for message type & has failed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message B1733 - Resetting block size for message type & has failed ?

  The SAP error message B1733, which states "Resetting block size for message type & has failed," typically occurs in the context of SAP's IDoc (Intermediate Document) processing. This error can arise during the communication between systems, particularly when dealing with message types in the ALE (Application Link Enabling) environment.
  Cause:
  
  Configuration Issues: The error may be due to incorrect configuration settings in the ALE or IDoc setup. This could involve settings related to message types, partner profiles, or port definitions.
  Data Issues: If the data being processed is too large or not formatted correctly, it can lead to issues when the system attempts to reset the block size.
  System Performance: High system load or performance issues can also lead to failures in processing IDocs, including resetting block sizes.
  Network Issues: Problems in the network communication between systems can cause interruptions that lead to this error.
  
  Solution:
  
  Check Configuration: Review the configuration settings for the relevant message type in transaction WE20 (Partner Profiles) and ensure that they are set up correctly. Verify the settings for the logical system and the port.
  Monitor IDoc Processing: Use transaction WE02 or WE05 to monitor IDocs and check for any related errors or issues. Look for IDocs that are in error status and analyze their details.
  Review Data: Ensure that the data being sent in the IDoc is valid and does not exceed any limits. Check for any special characters or formatting issues that might cause problems.
  System Performance: Monitor system performance and check for any bottlenecks. If necessary, optimize the system or schedule IDoc processing during off-peak hours.
  Network Stability: Ensure that the network connection between the systems is stable and that there are no interruptions that could affect IDoc processing.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as WE20 (Partner Profiles), WE02/WE05 (IDoc Monitoring), and BD87 (Reprocessing IDocs).
  SAP Notes: Check for any SAP Notes related to this error message. SAP frequently releases notes that provide fixes or workarounds for known issues.
  Documentation: Review SAP documentation on IDoc processing and ALE configuration for best practices and troubleshooting steps.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP Basis or technical team for further investigation, as they can provide deeper insights into system logs and configurations.