How To Fix CRM_BSP_CUSTCHECK201 - Use an input field instead of a list box

SAP Error Message - Details

• Message type: E = Error

• Message class: CRM_BSP_CUSTCHECK - CRM: Blueprint - Consistency Check

• Message number: 201

• Message text: Use an input field instead of a list box

What causes this issue?

You wish to define a dropdown listbox (listbox), the values of which
want to calculate yourself.

System Response

This setting is not possible due to performance reasons:
The allowed values must be calculated again before you save the page,
regardless of whether or not the listbox is executed on the page. The
allowed values are only calculated for input fields with input helps on
request.
Rendering a listbox in the browser is time-consuming.

How to fix this error?

Change the field category to 'input field' and choose 'VALUE_TABLE' as
the application. With these settings, the method
'fill_dropdown_listbox' is called at runtime, with which you can
specify the contents of the input help popup.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CRM_BSP_CUSTCHECK201 - Use an input field instead of a list box ?

  The SAP error message CRM_BSP_CUSTCHECK201 indicates that there is an issue with the use of a list box in a Business Server Page (BSP) application. Specifically, it suggests that an input field should be used instead of a list box for the particular context in which the error occurs.
  Cause:
  The error typically arises when:
  
  A list box is used in a scenario where a single input value is expected.
  The BSP application is designed to accept a single value input, but a list box (which allows multiple selections) is being used instead.
  The configuration or coding of the BSP application does not align with the expected input type for the field in question.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review the BSP Application Code:
  
  Check the code where the list box is defined. Look for the specific field that is causing the error.
  Change the definition from a list box to an input field (e.g., an input text field) if only a single value is required.
  
  
  
  Modify the UI Component:
  
  If you have access to the BSP application’s UI component, replace the list box with an input field. This can usually be done in the HTML or the BSP application’s layout.
  
  
  
  Check the Data Model:
  
  Ensure that the data model or the backend logic is designed to handle single input values. If the logic expects a single value, the UI should reflect that.
  
  
  
  Test the Changes:
  
  After making the changes, test the application to ensure that the error no longer occurs and that the input is processed correctly.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or community forums for additional guidance on best practices for using input fields and list boxes in BSP applications.
  
  
  
  Related Information:
  
  BSP Applications: Business Server Pages are used in SAP to create web-based applications. Understanding how to properly use input fields and list boxes is crucial for effective UI design.
  SAP Notes: Check for any relevant SAP Notes that might provide additional context or solutions for this specific error message.
  SAP Community: Engaging with the SAP Community can provide insights from other users who may have encountered and resolved similar issues.
  
  By following these steps, you should be able to resolve the CRM_BSP_CUSTCHECK201 error and ensure that your BSP application functions as intended.