How To Fix COM_ALTER_IDENT205 - Automatic generation is not possible for data type &1

SAP Error Message - Details

• Message type: E = Error

• Message class: COM_ALTER_IDENT - Messages for Alternative Identifiers

• Message number: 205

• Message text: Automatic generation is not possible for data type &1

What causes this issue?

Automatic generation only works for character strings and integers.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Choose an attribute with the data type character string or integer as
the basis for your alternative ID type. If you really need the data type
you specified, then do not generate the alternative ID type
automatically but create the implementation manually.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message COM_ALTER_IDENT205 - Automatic generation is not possible for data type &1 ?

  The SAP error message COM_ALTER_IDENT205 indicates that automatic generation of a data type is not possible for the specified data type (represented by &1). This error typically occurs in the context of data modeling or when working with database objects in SAP, particularly in the context of Composite Providers or other data modeling scenarios.
  Cause:
  The error can be caused by several factors, including:
  
  
  Unsupported Data Type: The data type specified may not be supported for automatic generation. This can happen if the data type is a complex type or a user-defined type that SAP does not recognize for automatic generation.
  
  
  Incompatible Data Model: The data model may have inconsistencies or incompatibilities that prevent the automatic generation of the required data type.
  
  
  Missing Metadata: There may be missing metadata or configuration settings that are required for the automatic generation process.
  
  
  System Configuration Issues: There could be issues with the system configuration or settings that affect how data types are handled.
  
  
  Solution:
  To resolve the error, you can try the following steps:
  
  
  Check Data Type: Verify the data type specified in the error message. Ensure that it is a supported type for the operation you are trying to perform.
  
  
  Review Data Model: Examine the data model for any inconsistencies or errors. Make sure that all components are correctly defined and compatible.
  
  
  Manual Definition: If automatic generation is not possible, consider defining the data type manually. This may involve creating a new data type or modifying an existing one to meet the requirements.
  
  
  Check Metadata: Ensure that all necessary metadata is present and correctly configured. This may involve checking the settings in the SAP system or the specific application you are working with.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for guidance on the specific data type and its requirements.
  
  
  System Updates: Ensure that your SAP system is up to date with the latest patches and updates, as this can sometimes resolve underlying issues.
  
  
  Contact SAP Support: If the issue persists, consider reaching out to SAP support for assistance. They can provide more specific guidance based on your system configuration and the context of the error.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Documentation: Review the official SAP documentation related to data modeling, Composite Providers, and data types for more detailed information.
  
  By following these steps, you should be able to identify the cause of the error and implement a suitable solution.