The tracing-operations dashboard's numbers

The traces of the company's direct purchase orders created between startDate and endDate (the past 30 days and today without both): the purchase orders, the suppliers involved, the average document completion and tracing depth, the depth funnel, the orders per creation day and the suppliers' countries and locations. The …Last30Days fields are the same four KPIs over the period of equal length just before. filter is a JSON-encoded TracingMetricsFilter; its lists, arrays or comma-separated strings, pick the traces counted. Days are read in the x-timezone header's timezone (UTC without it). Only the company itself or Retraced staff may read it.