OLE DB Using database stored procedures in DataWindow objects – PB Docs 2018

Result set definition

You must define what the result set looks like in the DataWindow
painter. PowerBuilder cannot determine this information from the
stored procedure definition in the database.

Stored procedure arguments

The DataWindow painter provides the arguments for stored
procedures only if the driver you are using to connect gives
PowerBuilder the required information. If the arguments for the
database stored procedure are not provided, you must define
them.

DataWindow updates

Updates are not allowed for stored procedures in a DataWindow
object. Only retrieval is allowed.