For each location type for which active 3PL settings have been defined, the algorithm calculates the bin location usage of each supplier’s stocks on this location type, day per day. The stock level of every day is calculated from the current inventory and the inventory history.
For each day, the algorithm calculates the list of locations that should be invoiced for storage of the supplier’s items:

• If ‘Daily used number of locations’ is active, then all bin locations that have contained any item of the supplier will be added to the list
• If ‘Daily final stock’ is active, then all bin locations that contain any item of the supplier will be added to the list

The storage price of each bin location is defined in the price list of the item linked to its location type, and the total storage price for the day is the sum of the bin location prices. If a bin location has no location type, then its price is zero.
If the shortest invoiceable duration is ‘Week’ or ‘Month’, then if a location is used on any day of the week/month, it is considered as used during the whole week/month, and its daily storage price is then multiplied by the corresponding number of days.
On the 3PL invoice, one separate line is added for each location type that takes part into the calculation.