How To Fix SF640 - Link type table has not been maintained

SAP Error Message - Details

• Message type: E = Error

• Message class: SF - SAPfind: Message Texts

• Message number: 640

• Message text: Link type table has not been maintained

What causes this issue?

The tables listing possible link types (DSYLI and DSYLT) do not contain
any entries.

System Response

Execution of the program stops.

How to fix this error?

Using SM31 add the following entries:
to table DSYLI:
E
I
O
R
T
to table DSYLT:
Language,,L,,Link type ID
D,,E,,Executable link
D,,I,,Insertable link
D,,O,,Link from a structure
D,,R,,Referential link
D,,T,,Link to a structure
Then repeat the function.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SF640 - Link type table has not been maintained ?

  The SAP error message SF640, which states "Link type table has not been maintained," typically occurs in the context of SAP SuccessFactors or SAP HCM (Human Capital Management) when there is an issue with the configuration of link types in the system. This error indicates that the system is unable to find the necessary link type configuration for a specific operation or process.
  Cause:
  
  Missing Configuration: The link type table that defines the relationships between different entities (like employees, positions, etc.) has not been set up or maintained properly.
  Incorrect Settings: There may be incorrect or incomplete settings in the link type configuration that prevent the system from processing requests.
  Data Migration Issues: If data has been migrated from another system, the link types may not have been correctly transferred or configured.
  
  Solution:
  
  
  Maintain Link Type Table:
  
  Navigate to the relevant configuration area in SAP where link types are defined. This is usually found in the customizing settings (SPRO).
  Ensure that the link type table is properly maintained. You may need to create or update entries to reflect the necessary relationships.
  Check for any missing entries that are required for the specific process you are trying to execute.
  
  
  
  Check Configuration:
  
  Review the configuration settings for link types to ensure they are correctly set up. This includes verifying that all necessary fields are filled out and that the relationships are correctly defined.
  If you are unsure about the correct settings, refer to SAP documentation or consult with a functional consultant who specializes in the relevant module.
  
  
  
  Testing:
  
  After making changes, test the process again to see if the error persists. If it does, further investigation may be needed to identify any other underlying issues.
  
  
  
  Consult Documentation:
  
  Refer to SAP Help documentation or community forums for additional guidance on maintaining link types and resolving related errors.
  
  
  
  Contact SAP Support:
  
  If the issue cannot be resolved through configuration changes, consider reaching out to SAP Support for assistance. They can provide more specific guidance based on your system's configuration and version.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes that may help in maintaining link types, such as SPRO for customizing settings.
  SAP Notes: Check for any SAP Notes related to this error message, as they may provide patches or additional information on known issues.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to resolve the SF640 error and ensure that your link type table is properly maintained.