# Desk log EDA-SKU-20260823

**Status:** First-party illustrative retail composite; not customer, POS, order, accounting, benchmark, or independently audited data  
**Run date:** 2026-08-23  
**Evidence checked:** 2026-08-31  
**Operator:** InfiniSynapse Data Team  
**Attestor:** William Zhu, InfiniSynapse cofounder ([GitHub @allwefantasy](https://github.com/allwefantasy))

The operator inspected an illustrative store/web join containing 9,400 POS lines and 7,100 web lines. The output displayed 740 unmapped store barcodes, 210 pickup lines at double-count risk, six SKU rank flips, and a 4.2-percentage-point decrease in store share after the shared-key join. Reordering and an omnichannel rank were held because mapping and pickup ownership remained unresolved.

The [CSV](https://infinisynapse.com/blog-media/ecommerce-data-analytics/downloads/store-web-summary-EDA-SKU-20260823.csv) exposes six aggregates and two held actions. The [verification script](https://infinisynapse.com/blog-media/ecommerce-data-analytics/downloads/verify-EDA-SKU-20260823.py) checks displayed output only. Source rows, ticket/order identifiers, SKU mapping, monetary values, SQL, denominators, and reconciliation totals are unavailable.

External context: [U.S. GAO Assessing Data Reliability](https://www.gao.gov/products/gao-20-283g), [UK Government AQuA Book](https://www.gov.uk/guidance/the-aqua-book), and [U.S. Census Quarterly Retail E-Commerce methodology](https://www.census.gov/retail/ecommerce/how_surveys_are_collected.html) (retrieved 2026-08-31). These publishers did not review this run.