Internal error: specify a split scenario

What causes this issue?

The LE_DSP_DIALOG function module was called up without specification
of a split scenario.

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?

When you call up this function module, you must enter a split scenario.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.