FOCUS #636: Glossary Terms for 'Correction', 'Credit', and 'Refund'

[ijurica]

This PR introduces definitions for the glossary terms 'Correction' and 'Refund'

[ijurica]

Do we need to provide additional clarification for any of the ChargeCategory allowed values - Credit and/or Adjustments in particular - and how they differ from Refunds and Corrections?

Value	Description
Usage	Positive or negative charges based on the quantity of a service or resource that was consumed over a given period of time including refunds.
Purchase	Positive or negative charges for the acquisition of a service or resource bought upfront or on a recurring basis including refunds.
Tax	Positive or negative applicable taxes that are levied by the relevant authorities including refunds. Tax charges may vary depending on factors such as the location, jurisdiction, and local or federal regulations.
Credit	Positive or negative charges granted by the provider for various scenarios e.g promotional credits or corrections to promotional credits.
Adjustment	Positive or negative charges the provider applies that do not fall into other category values.

[shawnalpay]

Agreed in Jan 21 TF1 that @ahullah will fold the definition for Correction into #675, and this PR shall be closed.

EDIT: Agreed in Jan 21 TF1 that @ijurica shall incorporate definitions from @ahullah into this PR and remove the glossary from #675.