How To Fix UCT2012 - Single selection &1 cannot be used for the basic field

SAP Error Message - Details

• Message type: E = Error

• Message class: UCT2 - Messages for Hierarchy Selections

• Message number: 012

• Message text: Single selection &1 cannot be used for the basic field

What causes this issue?

The cross-characteristic selection applies to the basic field itself.
This is <ZH>not</> useful if the single selection is used for the basic
field.
This is useful only if the single selection is used for a referenced
field.

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?

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 UCT2012 - Single selection &1 cannot be used for the basic field ?

  The SAP error message UCT2012, which states "Single selection &1 cannot be used for the basic field," typically occurs in the context of using selection screens or when defining selection criteria in reports or transactions. This error indicates that a single selection option is being incorrectly applied to a field that does not support it.
  Cause:
  
  Field Type Mismatch: The field you are trying to apply a single selection to may not be compatible with that type of selection. For example, if the field is defined as a range or a multiple selection field, trying to use a single selection option will trigger this error.
  Incorrect Selection Screen Definition: The selection screen may have been defined incorrectly, where a field that should allow multiple values is set to allow only a single value.
  Data Element Restrictions: The data element associated with the field may have restrictions that prevent it from being used in a single selection context.
  
  Solution:
  
  Check Field Definition: Review the field definition in the Data Dictionary (SE11) to ensure that it is set up correctly for the intended use. If it is meant to allow multiple selections, ensure that it is defined as such.
  Modify Selection Screen: If you are developing a report or transaction, check the selection screen code. Ensure that the field is defined correctly in the selection screen logic. For example, if you are using SELECT-OPTIONS, it should be compatible with the field type.
  Use Appropriate Selection Type: If the field is indeed meant to be a single selection, ensure that you are using the correct selection type in your code. For example, use PARAMETERS for single values and SELECT-OPTIONS for ranges or multiple values.
  Consult Documentation: If you are unsure about the field's capabilities, refer to the SAP documentation or consult with a functional consultant who can provide insights into the specific field's usage.
  
  Related Information:
  
  Transaction Codes: You may want to check transaction codes like SE11 (Data Dictionary), SE80 (Object Navigator), or SE38 (ABAP Editor) to investigate the field and selection screen definitions.
  SAP Notes: Look for relevant SAP Notes that might address this specific error or provide additional context on similar issues.
  Community Forums: SAP Community or other forums can be helpful to see if others have encountered and resolved similar issues.
  
  By following these steps, you should be able to identify the cause of the UCT2012 error and implement a suitable solution.