# Does this app change my Shopify product inventory? It depends on your inventory mode. The app can run in writeback-enabled modes or in a strict read-only mode. Mode 1 (App-managed Virtual): the app writes finished-goods inventory. Mode 2 (Shopify-sourced Sync): the app can write finished-goods inventory while using Shopify as the raw-material source (raw-material reverse writeback is not the default behavior on webhook/sync paths). Mode 3 (Shopify-sourced Read-only): the app does not write Shopify inventory levels. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://soplyapp-1.gitbook.io/soply-raw-materials-inventory/technical-support/does-this-app-change-my-shopify-product-inventory.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.