How To Fix DT297 - Field &: Type & not allowed in DB tables

SAP Error Message - Details

• Message type: E = Error

• Message class: DT - Table activation (incl. indexes)

• Message number: 297

• Message text: Field &: Type & not allowed in DB tables

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DT297 - Field &: Type & not allowed in DB tables ?

  The SAP error message DT297, which states "Field &: Type & not allowed in DB tables," typically occurs when there is an issue with the data type of a field defined in a database table. This error indicates that the field type you are trying to use is not permitted for database tables in SAP.
  Cause:
  
  Invalid Data Type: The field type you are trying to define (e.g., a certain data type that is not supported for database tables) is not allowed. For example, certain complex data types or structures may not be permissible.
  Field Length Exceeds Limits: If the length of the field exceeds the maximum allowed length for database fields, this error may occur.
  Incorrect Field Definition: The field may be defined incorrectly in the data dictionary (SE11) or in the structure that is being used in the table.
  Incompatibility with Database: The data type may not be compatible with the underlying database system being used (e.g., certain types may not be supported by the database).
  
  Solution:
  
  Check Field Definition: Go to transaction SE11 (Data Dictionary) and check the field definition for the table in question. Ensure that the data type and length are valid for database tables.
  Use Supported Data Types: Make sure to use only the data types that are allowed for database tables. Commonly used types include CHAR, NUMC, DATS, TIMS, etc.
  Adjust Field Length: If the field length exceeds the maximum allowed length, reduce it to fit within the limits.
  Review Data Element: If the field is based on a data element, check the data element definition to ensure it is correctly defined and compatible with database tables.
  Recreate the Table: If the table definition is incorrect and cannot be easily fixed, consider recreating the table with the correct field definitions.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on allowed data types and their properties.
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE14 (Database Utility), SE37 (Function Module), SE80 (Object Navigator).
  SAP Notes: Check SAP Notes for any known issues or updates related to this error message.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after following these steps, it may be beneficial to consult with an SAP Basis or ABAP developer for further assistance.