Sourcing derogations

The Sourcing derogations screen handles the case the approved supplier list (ASL) cannot cover: real life has AOGs and single sources. A derogation authorizes, exceptionally, a purchase from a non-approved source — but never silently.

What a derogation is (and is not)

A derogation is motivated and time-bound. Both constraints are mandatory: without them, the derogation would become the normal way to bypass the ASL, and the ASL would serve no purpose.

  • Reason required — AOG, single source, critical lead time…
  • Valid until required — beyond it, the derogation authorizes nothing.
  • Approver — the author of the derogation engages their responsibility; they are recorded.
  • Its creation is logged to the sealed (tamper-evident) audit: it leaves an unalterable trace.

Effect on an item’s sources

On an item’s Sourcing tab and in the consolidated sources view, a non-approved supplier covered by an active derogation appears as “Active derogation” — purchasable, but flagged (alert tone), never confused with a genuine approval. A valid approval takes precedence: no need to derogate.

The effective blocking of an order placed outside the ASL (refused except with an active derogation) lives in the engagement chain (purchase request → order), coming later. Here we record and trace the exception; its enforcement at ordering time will come with the order.

Managing derogations

  • “Active only” filter — hides expired derogations.
  • Revoke — ends a derogation before its term (it is no longer active). This action is logged too.
  • Derogations nearing expiry are shown first.

See also