How To Fix KE455 - Tables cannot have more than 5 key fields!

SAP Error Message - Details

• Message type: E = Error

• Message class: KE -

• Message number: 455

• Message text: Tables cannot have more than 5 key fields!

What causes this issue?

When maintaining derivation tables, you can only use master data tables
with up to 5 key fields.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KE455 - Tables cannot have more than 5 key fields! ?

  The SAP error message KE455, which states "Tables cannot have more than 5 key fields," typically occurs in the context of SAP Controlling (CO) when you are trying to create or modify a table in the CO module that exceeds the limit of five key fields. This limit is imposed by the SAP system to ensure optimal performance and maintainability of the data structures.
  Cause:
  The error is triggered when:
  
  You attempt to define a new table or modify an existing one in the CO module with more than five key fields.
  The configuration or customization you are trying to implement violates the system's constraints regarding the maximum number of key fields allowed.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review Table Design: Check the design of the table you are trying to create or modify. Ensure that you are only using up to five key fields. If you have more than five, consider whether all of them are necessary as key fields.
  
  
  Re-evaluate Key Fields: Determine if some of the key fields can be combined or if certain fields can be made non-key fields. This may involve changing the way you structure your data.
  
  
  Use Additional Tables: If you need to store more information than can be accommodated by five key fields, consider creating additional tables that can be linked to the primary table through foreign keys.
  
  
  Consult Documentation: Refer to SAP documentation or guidelines regarding table design in the CO module to ensure compliance with best practices.
  
  
  Seek Help from SAP Support: If you are unable to resolve the issue on your own, consider reaching out to SAP support or consulting with an SAP expert who can provide guidance based on your specific scenario.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might provide additional insights or updates regarding this error message.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can share their solutions.
  Performance Considerations: Keep in mind that having too many key fields can impact performance, so it's essential to design your tables efficiently.
  
  By following these steps, you should be able to address the KE455 error and successfully configure your tables within the constraints set by SAP.