How To Fix KO503 - Field selection in the order type is rejected

SAP Error Message - Details

• Message type: E = Error

• Message class: KO - Master data for CO orders

• Message number: 503

• Message text: Field selection in the order type is rejected

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message KO503 - Field selection in the order type is rejected ?

  The SAP error message KO503, which states "Field selection in the order type is rejected," typically occurs when there is an issue with the configuration of the order type in the Controlling (CO) module, particularly in relation to internal orders or production orders. This error indicates that certain fields required for the order type are not being filled out correctly or are not allowed based on the field selection settings.
  Cause:
  
  Field Selection Configuration: The field selection for the order type may not be configured correctly. Certain fields may be set as mandatory, but the data being entered does not meet the requirements.
  Missing Data: Required fields for the order type may not be filled in, leading to the rejection of the order creation or modification.
  Authorization Issues: The user may not have the necessary authorizations to enter data in certain fields.
  Custom Enhancements: Custom developments or enhancements may be interfering with the standard field selection logic.
  
  Solution:
  
  
  Check Field Selection Settings:
  
  Go to the configuration settings for the order type in transaction code OKA0 (for internal orders) or CJB1 (for production orders).
  Review the field selection settings to ensure that the required fields are correctly defined and that their status (optional, required, hidden) is appropriate.
  
  
  
  Fill Required Fields:
  
  Ensure that all mandatory fields are filled in when creating or modifying the order. Check the order type documentation to identify which fields are required.
  
  
  
  Review User Authorizations:
  
  Check the user roles and authorizations to ensure that the user has the necessary permissions to enter data in the required fields.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the process to identify any custom logic that may be affecting field selection. This may require the assistance of a developer.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific order type and field selection to ensure compliance with best practices.
  
  
  
  Testing:
  
  After making changes, test the order creation process to ensure that the error does not occur again.
  
  
  
  Related Information:
  
  Transaction Codes: 
  
  OKA0 - Configuration for Internal Orders
  CJB1 - Configuration for Production Orders
  
  
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional guidance on this error.
  Field Selection Groups: Understand how field selection groups work in SAP and how they can be configured for different order types.
  
  If the problem continues after following these steps, it may be beneficial to reach out to your SAP support team or consult with an SAP expert for further assistance.