How To Fix CM_EHFND_FW_WFF127 - Cron string &1 is invalid

SAP Error Message - Details

• Message type: E = Error

• Message class: CM_EHFND_FW_WFF - Messages for Exception Obj. of EHS/PS&S Workflow Foundation

• Message number: 127

• Message text: Cron string &1 is invalid

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CM_EHFND_FW_WFF127 - Cron string &1 is invalid ?

  The SAP error message CM_EHFND_FW_WFF127 indicates that there is an issue with a cron string that has been defined in the system. A cron string is used to schedule jobs in a time-based manner, and it must adhere to a specific format to be considered valid.
  Cause:
  The error occurs when the cron string provided does not conform to the expected syntax or contains invalid values. Common reasons for this error include:
  
  Incorrect Format: The cron string may not follow the standard cron format, which typically consists of five or six fields (minute, hour, day of month, month, day of week, and optionally year).
  Invalid Values: The values specified in the cron string may be out of range (e.g., minutes should be between 0-59, hours between 0-23, etc.).
  Special Characters: The use of unsupported special characters or incorrect combinations of them can lead to an invalid cron string.
  Whitespace Issues: Extra spaces or tabs in the cron string can also cause it to be considered invalid.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check the Cron String: Review the cron string for any syntax errors. Ensure it follows the correct format:
  
  Standard format: * * * * * (minute, hour, day of month, month, day of week)
  Example: 0 12 * * 1 (At 12:00 PM every Monday)
  
  
  
  Validate Values: Ensure that all values in the cron string are within the acceptable ranges:
  
  Minutes: 0-59
  Hours: 0-23
  Day of Month: 1-31
  Month: 1-12
  Day of Week: 0-6 (where 0 is Sunday)
  
  
  
  Remove Special Characters: If you are using special characters (like ,, -, /, etc.), ensure they are used correctly according to cron syntax.
  
  
  Test the Cron String: Use a cron expression validator tool available online to test your cron string for validity.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on cron string formatting in the context of your SAP system.
  
  
  Adjust Configuration: If the cron string is part of a configuration in a job scheduling tool or application, make sure to update it accordingly and save the changes.
  
  
  Related Information:
  
  Cron Syntax Reference: Familiarize yourself with cron syntax and examples to avoid common pitfalls.
  SAP Job Scheduling: Understand how job scheduling works in SAP and the role of cron strings in automating tasks.
  Error Logs: Check SAP error logs for additional context or related errors that may provide more insight into the issue.
  
  By following these steps, you should be able to identify and correct the issue with the cron string, thereby resolving the error message CM_EHFND_FW_WFF127.