How To Fix KO306 - Date & is not valid; check your entry

SAP Error Message - Details

• Message type: E = Error

• Message class: KO - Master data for CO orders

• Message number: 306

• Message text: Date & is not valid; check your entry

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 KO306 - Date & is not valid; check your entry ?

  The SAP error message KO306 ("Date & is not valid; check your entry") typically occurs in the context of controlling (CO) or project systems (PS) when a user attempts to enter a date that is not recognized as valid by the system. This can happen in various transactions, such as when creating or modifying cost centers, internal orders, or project definitions.
  Causes of KO306 Error
  
  Invalid Date Format: The date entered may not conform to the expected format (e.g., DD/MM/YYYY or MM/DD/YYYY).
  Date Outside Valid Range: The date may fall outside the valid posting periods defined in the system. For example, if the date is in a closed fiscal year or period, it will trigger this error.
  System Settings: The system may have specific settings that restrict certain dates based on configuration (e.g., fiscal year variant settings).
  User Authorization: The user may not have the necessary authorizations to enter data for the specified date.
  
  Solutions to KO306 Error
  
  Check Date Format: Ensure that the date is entered in the correct format as per the system's configuration.
  Verify Posting Periods: Check the posting periods in the system to ensure that the date falls within an open period. You can do this by navigating to:
  
  Transaction Code: OB52 (for controlling area) or OAVC (for project systems) to check the open and closed periods.
  
  
  Adjust Date: If the date is indeed outside the valid range, adjust it to a valid date that falls within the open periods.
  Review System Configuration: If you suspect that the issue is due to system settings, consult with your SAP administrator or functional consultant to review the configuration related to fiscal year variants and posting periods.
  Check Authorizations: Ensure that you have the necessary authorizations to perform the action on the specified date. If not, contact your system administrator for assistance.
  
  Related Information
  
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  OB52: To check and maintain posting periods.
  KSB1: To view line items for cost centers.
  CJ20N: For project management activities.
  
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search for relevant notes in the SAP Support Portal.
  
  
  Documentation: Review SAP documentation or user manuals related to controlling and project systems for more detailed information on date handling and posting periods.
  
  
  By following these steps, you should be able to resolve the KO306 error and successfully enter the required date in your SAP system.