Merge Supplier CSV Files And Fix Duplicate SKUs

Merge Supplier CSV Files And Fix Duplicate SKUs — One Clean Master File For ShopifyWho this service is forThis service is for Shopify store owners, dropshippers, wholesalers and growing brands who buy from more than one supplier and now have a catalog that is difficult to trust. If your products arrive in two, three or more spreadsheets, each with its own column names, its own way of writing sizes and colors, and its own SKU system, this service is built for you. It is also for sellers who have added products over time, merged old lists into new ones, or inherited a catalog from a previous team member and now see the same product listed twice, with different prices, different stock figures and different titles.The exact problems this service solvesWhen supplier files are combined without a clear method, duplicate SKUs cause real damage. The same product can appear twice on your store, split its sales history, confuse customers and create inventory mistakes. One file may call a product SKU-1024 while another calls the same item SUP-1024, so Shopify treats them as different products. Prices may disagree between suppliers, stock levels may conflict, images may be missing from one file and present in another, and variant options such as size, color and pack quantity may be written in incompatible ways. The result is manual copying, repeated corrections and a catalog that nobody fully trusts.What you sendSend two or more supplier or catalog files in CSV format, together with a short note telling me which supplier should win when the same product appears in more than one file, and whether any supplier, product group or price list should be excluded. If you already have a Shopify product export, include it as well, because it helps me match your existing products and avoid creating new duplicates. Tell me about any custom attributes you want kept, such as material, pack size or barcode, and any naming rules you prefer for the final file.What you receiveYou receive one merged master Shopify file, ready for import, in which duplicates have been resolved according to the rule you approve, and variant, image, price and inventory data have been aligned to Shopify's structure. You also receive a clear exception report for every conflict that needs a human decision, such as two different prices for the same SKU, two different product titles, missing images, or a variant that cannot be matched with confidence. Nothing in the exception report is guessed: items listed there are left for your decision, with both source values shown side by side so you can choose quickly.How the work is doneEvery order starts with a free assessment. I first examine your files, count the products and variants, identify overlapping SKUs, and check column structures before any merging begins. You then receive a short summary of what can be merged cleanly, what will need a decision, and the duplicate rule I recommend. Only after you confirm that rule do I build the master file. I standardize column names, normalize variant options, resolve duplicates, keep the winning record's complete data, and preserve useful information from the losing records where it adds value, such as extra images or a barcode. The file is then checked row by row and validated for Shopify import.Proof and quality promiseThis careful, assessment-first method is the same approach behind a recent zero-error import of 21 products and 88 SKUs, completed without a single failed row. That result came from checking every variant, every image link and every required field before delivery, not from rushing a merge and hoping Shopify would accept it. Your merged file receives the same treatment: a final validation pass, a clean structure, and an exception report that keeps you in control of every judgment call. Order today and turn several conflicting supplier files into one catalog you can finally rely on.