You may have an error "Failed to generate DWSQL" when using Appeon developer on PB 11.5 and ASA.

Please try to upgrade your PowerBuilder to the latest PowerBuilder 11.5 version available.
First of all ensure that the database connection in Appeon Developer Configuration | DB Type Profiles is successful.

Then we recommend you full build your PowerBuilder application.

Next, go to the \$Developer$\Project\your_application\release or debug\dwsql\dwsql.log to get the last record, empty compiled this DataWindow in PowerBuilder(Add a character and delete this character in the edit source of PB), then deploy the application with full deployment again.