Creating an OCI SKU Inventory History File

Customers can generate and download a SKU activity file on their own:

First, generate the SKU activity file with submitEventsActivityExport
API call: 
https://{shortCode}.api.commercecloud.salesforce.com/inventory/impex/v1/organizations/{organizationId}/event-log/exports

Next, download the SKU activity file using downloadEventsActivityExportFile
API call:
https://{shortCode}.api.commercecloud.salesforce.com/inventory/impex/v1/organizations/{organizationId}/event-log/exports/{exportId}/file-content

Additionally, If you would like to Check the status of the export: retrieveEventLogExportStatus
API call:
https://{shortCode}.api.commercecloud.salesforce.com/inventory/impex/v1/organizations/{organizationId}/event-log/exports/{exportId}/status

Note: Salesforce Commerce API (SCAPI) (above endpoints) can be accessed by B2C, B2B, D2C and core customers.
Authentication can be done through

• Configure Headless Commerce API Authentication via Account Manager (generally B2C customers are using this method)
• Set Up the Headless Commerce API as a Connected App (generally B2B or D2C customers)