A configuration key consisting of 1-7 letters, indicating which modules of the UniPay suite are deployed to the server. You should set on the 
user interface the values corresponding to the specified property values. The letters comprising the key can be used in any order. The absence of a letter in the property indicates the absence of the corresponding module. 
Possible values: 
- A - UniCharge
- B - UniBill
- P - UniBill Customer Portal
- I - API
- D - Detokenization
- H - UniCharge-proxy
- E - UniRead (Cloud)
- L - Console
- Q - QA_UTILS
The value in the file controls application assembly process. You can verify whether all modules are installed with the 
 checkModules pingdom check.
In case there are letters  in the settings on the user interface identifying the module which
was not installed,  pingdom check will result in the following error: MODULE_PROBLEM.