How To Fix SDDL_PARSER_MSG273 - Parameter not allowed as key field

SAP Error Message - Details

• Message type: E = Error

• Message class: SDDL_PARSER_MSG - Message Class for DDL Parser

• Message number: 273

• Message text: Parameter not allowed as key field

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SDDL_PARSER_MSG273 - Parameter not allowed as key field ?

  The SAP error message SDDL_PARSER_MSG273 with the description "Parameter not allowed as key field" typically occurs in the context of SAP's data modeling or configuration, particularly when dealing with the definition of key fields in a data structure or a data model.
  Cause:
  This error usually arises when you attempt to define a parameter or field as a key field in a data structure or model, but the system does not allow that specific parameter to be used as a key. Key fields are essential for uniquely identifying records in a database table or data structure, and not all fields are suitable for this purpose. Common reasons for this error include:
  
  Field Type: The field you are trying to set as a key may not be of a type that can be used as a key (e.g., it may be a text field or a field that does not have unique values).
  Business Logic: The business logic or data model may dictate that certain fields cannot be used as keys due to their nature or usage.
  Configuration Issues: There may be configuration settings or constraints in the system that prevent the field from being designated as a key.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review Field Properties: Check the properties of the field you are trying to set as a key. Ensure that it is appropriate for use as a key field (e.g., it should be unique and of a suitable data type).
  
  
  Consult Documentation: Refer to the SAP documentation or data model guidelines to understand which fields are allowed as key fields in the specific context you are working in.
  
  
  Modify Data Model: If the field is not suitable as a key, consider using a different field that meets the criteria for a key field. You may need to adjust your data model or structure accordingly.
  
  
  Check for Constraints: Look for any constraints or rules defined in the system that might restrict the use of certain fields as keys. This may involve checking configuration settings or consulting with a functional consultant.
  
  
  Testing: After making changes, test the configuration to ensure that the error is resolved and that the data model behaves as expected.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific notes related to this error message. SAP frequently updates its knowledge base with solutions to common issues.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed. Other users may have encountered the same error and can provide insights or solutions.
  SAP Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP Support for assistance.
  
  By following these steps, you should be able to identify the cause of the error and implement a suitable solution.