How To Fix CN810 - You must also maintain a unit when entering work

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 810

• Message text: You must also maintain a unit when entering work

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CN810 - You must also maintain a unit when entering work ?

  The SAP error message CN810 ("You must also maintain a unit when entering work") typically occurs in the context of project management or work order processing within the SAP system, particularly when dealing with work breakdown structures (WBS) or network activities. This error indicates that a unit of measure has not been specified for the work being entered, which is required for the system to process the data correctly.
  Cause:
  
  Missing Unit of Measure: The most common cause of this error is that the unit of measure (UoM) for the work being entered is not specified. This could happen if the user forgets to enter it or if the configuration does not allow for a default UoM.
  Configuration Issues: There may be issues with the configuration of the project or work order types that do not enforce or allow for the entry of a unit of measure.
  Data Entry Errors: Users may inadvertently skip the field for entering the unit of measure during data entry.
  
  Solution:
  
  Enter a Unit of Measure: When you encounter this error, check the entry screen where you are inputting the work. Ensure that you have specified a unit of measure (e.g., hours, days, etc.) in the relevant field.
  Check Configuration: If you are consistently encountering this error, it may be necessary to review the configuration settings for the project or work order types in SAP. Ensure that the unit of measure is set up correctly in the system.
  Default Values: If applicable, set up default values for units of measure in the configuration so that users do not have to enter them manually each time.
  User Training: Provide training to users on the importance of entering a unit of measure and how to do it correctly to avoid this error in the future.
  
  Related Information:
  
  Transaction Codes: This error may occur in various transaction codes related to project management, such as CJ20N (Project Builder), CN22 (Change Network), or CO02 (Change Production Order).
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error message, as there may be known issues or fixes provided by SAP.
  Documentation: Refer to SAP documentation or help files for detailed information on how to manage units of measure in project management and work order processing.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in project systems or controlling modules.