How To Fix FK728 - Program error: Calendar tables have invalid fields

SAP Error Message - Details

• Message type: E = Error

• Message class: FK - Factory calendar

• Message number: 728

• Message text: Program error: Calendar tables have invalid fields

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message FK728 - Program error: Calendar tables have invalid fields ?

  The SAP error message FK728, which states "Program error: Calendar tables have invalid fields," typically indicates that there is an issue with the calendar tables in the SAP system. This error can arise due to various reasons, including inconsistencies in the configuration of the calendar tables or issues with the underlying data.
  Causes:
  
  Inconsistent Configuration: The calendar tables may have been incorrectly configured, leading to invalid fields.
  Data Corruption: There may be corruption in the data stored in the calendar tables.
  Custom Modifications: If there have been custom modifications or enhancements to the standard SAP calendar functionality, these could lead to errors.
  Transport Issues: If changes were transported from one system to another (e.g., from development to production), there may have been issues during the transport process that caused the calendar tables to become inconsistent.
  
  Solutions:
  
  Check Configuration: Review the configuration of the calendar tables in the SAP system. Ensure that all fields are correctly defined and that there are no inconsistencies.
  Data Validation: Validate the data in the calendar tables to ensure that there are no corrupt entries. You can use transaction codes like SE11 (Data Dictionary) to check the structure and contents of the tables.
  Recreate Calendar Entries: If the calendar entries are corrupted, you may need to recreate them. This can often be done through the relevant configuration transactions.
  Check for Notes and Patches: Look for SAP Notes or patches that may address this specific error. SAP frequently releases updates that fix known issues.
  Debugging: If you have access to debugging tools, you can analyze the program that is generating the error to identify the specific cause.
  Consult SAP Support: If the issue persists and you cannot resolve it, consider reaching out to SAP Support for assistance. They can provide guidance based on the specific details of your system.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SE80 (Object Navigator), and SPRO (Customizing) to investigate the issue further.
  SAP Notes: Search the SAP Support Portal for any relevant notes that might provide additional context or solutions for the FK728 error.
  System Logs: Check system logs (transaction SLG1) for any additional error messages or warnings that may provide more context about the issue.
  
  By following these steps, you should be able to identify and resolve the underlying cause of the FK728 error in your SAP system.