How To Fix M2857 - No additional info objects can be attached to other info objects

SAP Error Message - Details

• Message type: E = Error

• Message class: M2 - LIS: Generating and updating info structures

• Message number: 857

• Message text: No additional info objects can be attached to other info objects

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message M2857 - No additional info objects can be attached to other info objects ?

  The SAP error message M2857, "No additional info objects can be attached to other info objects," typically occurs in the context of SAP's data warehousing or reporting environments, particularly when working with InfoObjects in the Business Warehouse (BW) or similar modules.
  Cause:
  This error generally arises when you attempt to attach additional InfoObjects to an existing InfoObject that has already reached its limit for attachments. In SAP BW, InfoObjects can have a defined number of relationships or attachments, and if you try to exceed this limit, the system will throw this error.
  Solution:
  To resolve the M2857 error, consider the following steps:
  
  
  Review Existing Attachments: Check the existing InfoObjects and their attachments. You can do this by navigating to the InfoObject in the SAP BW modeling tools and reviewing its properties.
  
  
  Remove Unused Attachments: If there are any attachments that are no longer needed, consider removing them to free up space for new attachments.
  
  
  Re-evaluate Design: If you find that you need more attachments than allowed, it may be worth re-evaluating the design of your InfoObjects. Consider whether you can consolidate some InfoObjects or redesign the relationships to avoid hitting the limit.
  
  
  Check Documentation: Refer to SAP documentation or the SAP Help Portal for specific limits on attachments for your version of SAP BW. This can provide insights into how many attachments are allowed and best practices for managing them.
  
  
  Consult SAP Notes: Sometimes, specific issues may be addressed in SAP Notes. Check the SAP Support Portal for any relevant notes that might provide additional context or solutions.
  
  
  Contact SAP Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP Support for assistance. They can provide more tailored guidance based on your specific system configuration and version.
  
  
  Related Information:
  
  InfoObjects: These are the basic building blocks in SAP BW that represent data fields. They can be characteristics (dimensions) or key figures (measures).
  Data Modeling: Understanding the data model and how InfoObjects interact is crucial for effective data warehousing.
  SAP BW/4HANA: If you are using a newer version of SAP BW, such as BW/4HANA, be aware that there may be differences in how InfoObjects and their relationships are managed compared to older versions.
  
  By following these steps, you should be able to address the M2857 error and manage your InfoObjects more effectively in SAP BW.