"Project" tab is not visible in admin interface

You do not have licence with "Project tracking" feature.

Billing codes are not visible when printing from Workstation client

1. Check that billing codes are enabled. In System settings you should see "Enabling billing codes" set to "enabled".

2. User must have at least two billing codes. When user has just one billing code it will become automatically the default billing code and Billing code selection won't be displayed.

Listing and displaying billing codes is too slow

1. Check whether you follow Guideline for creating billing codes

Too much "orphaned" billing codes

File which define billing codes must contain also all billing codes up to the root. If there is no such path then importer won't be able to put billing code into tree.

Wrong scenario - 600.7000 us unreachable:

Correction: