SAP Note 13722 - DBIF_RSQL_INVALID_CURSOR when creating biling doc.

Symptom:

When you create a billing document, ABAP/4 run-time error
DBIF_RSQL_INVALID_CURSOR occurs in program SAPLV60A. The error
occurs at command SELECT * FROM VBPA WHERE VBELN = XKOMFK-VBELN

Cause and prerequisites

In the text scheme for determining the item texts, at least one
TEXT-ID was assigned the MUST (display) indicator with value
Y (text displayed when copied).

Solution
For billing document item texts, the must (display) indicator must
have value "X" or " ".
Entering the value 'Y' leads to value ' '.
The following information appears:
"No text dialog window can be sent for billing document texts"

Key word: Billing doc.