This value is an 'as short as possible', alphanumeric (letters and numbers) value associated with Deliverr product records, and used as a shorthand "code" to identify products. This value is also visible and searchable on the Deliverr portal inventory list and detail screens. Unlike the DSKU, this value is assigned by you and created from the imported channel item that was first used to create the Deliverr product.
It is not used for internal barcodes at Deliverr, but is useful when connecting your Deliverr catalog to multiple channels (see Managing Product Catalogs) and for reporting and support purposes. The Product SKU value is editable by you on the Deliverr inventory detail screen by clicking on it. It may not be left blank.
When a product is created at Deliverr, it is assigned a random value that begins with "D". You can view and search on these values in the Deliverr portal inventory list and detail screens. Once assigned, this value will never change.
You may use this value for product packaging barcodes (it is guaranteed to not overlap with other sellers' products) or just for reporting and search purposes. It's helpful to use when communicating with Deliverr support as well, as it helps them find the items in question more easily.
Channel Alias SKU:
When connecting Deliverr to multiple channels, a given Deliverr product may be represented by different SKUs in different channels (aliases). These are used by Deliverr when determining what channel products are connected to which Deliverr products. Read more about managing product aliases here.