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

KO503 - Overview

• 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

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 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