How To Fix SO2_API021 - Initial BSP &1 of application &2 is not marked as Start BSP

SAP Error Message - Details

• Message type: E = Error

• Message class: SO2_API - O2: Error Messages for Object Check

• Message number: 021

• Message text: Initial BSP &1 of application &2 is not marked as Start BSP

What causes this issue?

The XSRF protection is activated for the BSP application "&V2&" (see
checkbox "XSRF Protection" on the "Properties" tab in the Web
Application Builder for the BSP application). In addition, the page or
the controller "&V1&" is stored as the Start BSP.
However, the indicator that the page can serve as a Start BSP for XSRF
protection is not set for the page/controller "&V1&".

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?

Set the indicator "Start-BSP" for "&V1&" (Checkbox "Start BSP" on the
"Properties" tab in the Web Application Builder for "&V1&").
Refer to the documentation on the "XSRF Protection" indicator.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.