# User Guide

- Start Here
  - [How SKU Manager works](/docs/start-here/how-sku-manager-works-with-shopify): Understand what SKU Manager updates, what stays in Shopify, and when to resync product data.
  - [Before you edit SKUs](/docs/start-here/important-things-to-know-before-editing-skus): Review important precautions before making SKU changes, especially when using patterns that could create duplicate SKUs.
  - [Quick setup](/docs/start-here/quick-setup): Get SKU Manager ready to use by installing the app, opening it once, and letting setup finish.
  - [What SKU Manager does](/docs/start-here/what-sku-manager-does): Overview of SKU Manager’s main tools for managing SKUs, barcodes, duplicates, automation, and bulk updates.
- Managing SKUs
  - [Automatically generate SKUs](/docs/managing-skus/automatically-generate-skus): Set up rules so SKU Manager can assign SKUs automatically when new products or variants are added.
  - [Duplicate checking](/docs/managing-skus/duplicate-checking): Scan your store for duplicate or missing identifiers before or after making SKU and barcode changes.
  - [Resyncing products](/docs/managing-skus/resyncing): Refresh SKU Manager’s product data after changes are made directly in Shopify or another app.
  - [Undoing SKU changes](/docs/managing-skus/undoing-changes): Use restore points to review previous SKU or barcode updates and roll back changes when needed.
  - [View and search products](/docs/managing-skus/view-and-search-products): Find and select products for SKU or barcode updates using product filters and search tools.
- Editing SKUs
  - [Editing SKUs overview](/docs/editing-skus/editing-skus-overview): Learn when to rebuild SKU values with Update SKUs and when to clean up existing values with Format SKUs.
  - [Creating and updating SKUs](/docs/editing-skus/creating-and-updating-skus): Build structured SKU values from smaller parts such as fixed text, conditionals, and increments.
  - [Format existing SKUs](/docs/editing-skus/formatting-existing-skus): Clean up existing SKUs by converting letter case, replacing text, and standardizing SKU formatting.
  - [Update page guide](/docs/editing-skus/update-page-guide): Understand the preview area, combo boxes, update settings, and controls used to build SKU or barcode updates.
  - [Combo modes](/docs/editing-skus/combo-modes): Choose how each combo box behaves when building SKU or barcode patterns.
  - [Conditional mode](/docs/editing-skus/conditional-mode): Use if/then rules to output different SKU values based on product or variant information.
  - [Toolbox on the Update page](/docs/editing-skus/toolbox): Use the Toolbox to add separators, save presets, and control advanced Update page behavior.
  - [SKU examples](/docs/editing-skus/examples): Use ready-made examples to understand common SKU structures and quickly start building your own pattern.
- Account, Billing, and Plans
  - [Canceling your plan](/docs/account-billing-and-plans/cancelling-the-app): Cancel your subscription from account settings and keep paid features until the current billing period ends.
  - [Contact details](/docs/account-billing-and-plans/contact-details): Update the contact name and email address used for support replies and important app-related messages.
  - [Plans and limits](/docs/account-billing-and-plans/plans-and-limits): Understand plan differences and choose the right SKU Manager plan for your store.
- FAQ
  - [Can SKU Manager edit variants?](/docs/faq/can-sku-manager-edit-variants): SKU Manager can update variant SKUs and barcodes, but not prices, titles, options, inventory, or other variant settings.
  - [Does SKU Manager change inventory?](/docs/faq/does-sku-manager-change-inventory): SKU Manager does not change stock counts or inventory tracking; it only updates SKU and barcode fields.
  - [Does SKU Manager create products?](/docs/faq/does-sku-manager-create-products): SKU Manager does not create products or variants; it only updates SKUs and barcodes on existing variants.
  - [Why products are missing](/docs/faq/why-are-some-products-missing): Troubleshoot missing products by checking filters, product data, and whether SKU Manager needs to resync with Shopify.
  - [SKU changes not showing in Shopify](/docs/faq/sku-change-did-not-appear-in-shopify): Troubleshoot SKU changes that did not appear by checking product sync status, duplicate-only updates, and deleted variants.