https://getdatamosaic.com/blog Why two systems disagree, and how to fix it: guides, templates and fixes for retail IT. en Sun, 08 Nov 2026 07:00:00 GMT https://getdatamosaic.com/blog/inventory-accuracy-formula https://getdatamosaic.com/blog/inventory-accuracy-formula Sun, 08 Nov 2026 07:00:00 GMT How-to One store, ten lines, one count. Worked out three ways, it scores 50%, 94.8% and 90.9%, and the honest answer depends on the question you are asking. https://getdatamosaic.com/blog/square-inventory-not-updating https://getdatamosaic.com/blog/square-inventory-not-updating Sat, 07 Nov 2026 07:00:00 GMT Fix a sync The sale went through and the count stayed where it was. Seven causes, what each one leaves behind, and one export that shows them across every store. https://getdatamosaic.com/blog/shopify-pos-not-updating-inventory https://getdatamosaic.com/blog/shopify-pos-not-updating-inventory Fri, 06 Nov 2026 07:00:00 GMT Fix a sync The sale went through at the till and the count didn't follow. Six causes that live in the store, and the pattern each one leaves when you line up every location. https://getdatamosaic.com/blog/compare-data-two-databases https://getdatamosaic.com/blog/compare-data-two-databases Thu, 05 Nov 2026 07:00:00 GMT How-to Tills on SQL Server, the ERP on Oracle, one invented day of sales: totals first, then a row hash both engines agree on, and the five type traps that make equal rows look different. https://getdatamosaic.com/blog/vlookup-compare-two-columns https://getdatamosaic.com/blog/vlookup-compare-two-columns Wed, 04 Nov 2026 07:00:00 GMT How-to Three ways to match two lists on a key, run on one invented price file, and the two traps that make a lookup say a row is missing when it isn't. https://getdatamosaic.com/blog/compare-two-tables-sql https://getdatamosaic.com/blog/compare-two-tables-sql Tue, 03 Nov 2026 07:00:00 GMT How-to EXCEPT both ways, a full outer join on the key, and a hash per row, run on one invented day of sales, with the NULL traps that make each one lie. https://getdatamosaic.com/blog/best-data-reconciliation-tools https://getdatamosaic.com/blog/best-data-reconciliation-tools Mon, 02 Nov 2026 07:00:00 GMT Compared Finance platforms, table compare tools, pipeline diffs, Power Query and DataMosaic: what each one answers, and which job in a store chain needs which. https://getdatamosaic.com/blog/compare-two-csv-files https://getdatamosaic.com/blog/compare-two-csv-files Sun, 01 Nov 2026 07:00:00 GMT How-to When the rows come in a different order, match them on a key first. Three ways to do it, and the four things that make identical files look different. https://getdatamosaic.com/blog/compare-two-excel-files https://getdatamosaic.com/blog/compare-two-excel-files Sun, 01 Nov 2026 07:00:00 GMT How-to Three ways, from one formula to a lookup on a key, and how to tell which one your files need. https://getdatamosaic.com/blog/data-reconciliation https://getdatamosaic.com/blog/data-reconciliation Sun, 01 Nov 2026 07:00:00 GMT How-to Counts, totals, keys, fields, hashes and grain: what each technique catches and misses, worked through on one chain’s Monday morning. https://getdatamosaic.com/blog/inventory-reconciliation-template https://getdatamosaic.com/blog/inventory-reconciliation-template Sun, 01 Nov 2026 07:00:00 GMT Templates Counted stock against system stock, store by store, with the variance, its value and the record accuracy worked out for you. No sign-up. https://getdatamosaic.com/blog/pos-vs-erp-sales https://getdatamosaic.com/blog/pos-vs-erp-sales Sun, 01 Nov 2026 07:00:00 GMT System pairs Six reasons a store’s till total and the ERP drift apart, how to tell which one you are looking at, and the query that checks every store before nine. https://getdatamosaic.com/blog/shopify-inventory-not-updating https://getdatamosaic.com/blog/shopify-inventory-not-updating Sun, 01 Nov 2026 07:00:00 GMT Fix a sync Locations, sync intervals, untracked items, and the one nobody checks: an error the connector logged and moved past.