The list of sites a customer operates, used as the denominator in site penetration. Sourced from the tender, the account review or a public register, dated per customer, and reconciled to billing so closed sites are retired.
Everyone gets the numerator right; it is in billing. The estate was typed in at the last tender. Days since refresh is the column that changes it.
Billed sites not on the estate: add them. Estate sites with no billing for a year and no known competitor: list for confirmation.
The list of sites a customer operates, from its tender documents, its own site list or public sources, with a source and a date. It is the denominator for site penetration.
A retailer has 300 stores. The provider serves 90. Penetration is 30 percent, and the other 210 are a named list.
An estate that is only the sites already served. Penetration is then 100 percent for every customer.