List Cost Change Usages
GET/api/cost-changes/:costChange/usages
Returns the usages behind the set's "already consumed" figure: for each staged line, the sales orders, assemblies and transfers that drew units from that receipt, the units each took, and what this change does to the cost of goods each carries (cogs_delta). Results are keyed by line ID.
inventory:readGrant this scope to your token under Settings → Developer → Personal Access Tokens.
Transfers into a marketplace-run warehouse (Amazon FBA/AWD, Walmart WFS) are flagged external: their units left the layer and are trued up as cost of goods, but there is no local destination layer to re-cost. For transfers into Amazon FBA, destination follows the units onto the Amazon FIFO layers they created, with those layers' own usages (kind: sale, transfer, other) and children.
Authentication: Requires Bearer token (inventory scope).
Path params:
- costChange: Cost change set ID
Request
Responses
- 200
- 401
- 403
- 404
- 429
OK
Response Headers
Unauthenticated — the bearer token is missing, revoked, expired, or malformed. Never retry automatically; fix the credential. See the Errors guide.
Forbidden — the token lacks a required scope, the endpoint is not available to API tokens, or the user behind the token lacks the permission. A human must adjust the token scopes or user permissions; do not retry.
Not Found
Response Headers
Rate limited — platform limit is 1,000 requests/min; individual tokens may carry lower limits. Honor the Retry-After header before retrying. See the Rate Limits guide.