The following diagnostic is generating in error within Lacerte;

e-file: This return has been flagged with a technical issue. DO NOT FILE without contacting Customer Success first. Please reference issue 717 when contacting Customer Success. (ref. #52184)

This diagnostic is triggered by entries in Screen 53.331, and should only be visible in ProConnect Tax Online, not Lacerte.

Solution:

This diagnostic has been reported to development and will be removed on a future program update.  Once all e-file diagnostics have been addressed, this diagnostic may be disregarded.  To disable e-file error checking, please see Disabling E-file Diagnostic Error Checking

This issue is scheduled to be resolved in a product update 04/30/2019 (Version 39.0430).