How To Fix DT112 - No selection possible (Table & has only one key field)

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 112

• Message text: No selection possible (Table & has only one key field)

What causes this issue?

You have activated the possible entries help (F4) in the field
<LS>Number of key fields</>. This field is used to determine the
generic key in generic buffering of the table.
Generic buffering is not possible for the table you are processing
because it only has one key field. No possible entries can therefore
be displayed.

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?

No action necessary.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DT112 - No selection possible (Table & has only one key field) ?

  The SAP error message DT112, which states "No selection possible (Table & has only one key field)," typically occurs when you are trying to create a selection screen or a data selection for a table that has only one key field. This situation arises because the system expects multiple key fields to allow for a meaningful selection.
  Cause:
  
  Single Key Field: The table you are trying to access has only one key field, which means that the selection criteria cannot be effectively defined with just one field.
  Selection Screen Configuration: The selection screen or the program logic may be incorrectly configured to expect multiple key fields for selection.
  Data Dictionary Definition: The data dictionary definition of the table may not align with the expected usage in the program.
  
  Solution:
  
  Review Table Structure: Check the structure of the table in the Data Dictionary (SE11). If it indeed has only one key field, consider whether your selection logic is appropriate for that table.
  Modify Selection Logic: If you are developing a report or a program, modify the selection logic to accommodate the single key field. You may need to adjust your selection criteria to work with the available key.
  Use of Additional Fields: If applicable, consider using additional non-key fields for filtering or selection purposes, if they are available in the table.
  Consult Documentation: Review the documentation for the specific table to understand its intended use and how to properly select data from it.
  Check for Updates: Ensure that your SAP system is up to date, as there may be patches or updates that address this issue.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SE11 (Data Dictionary) to view the table structure and SE80 (Object Navigator) to check the program or report that is generating the error.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may provide additional insights or solutions for this error.
  Community Forums: Consider checking SAP Community forums or other user groups for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to resolve the DT112 error and ensure that your selection logic aligns with the table's structure.