# Master data In IFS Ultimo, you manage data used in multiple places in different modules in one central location. We call these master data. The predefined templates for Master data can help you create an API for master data. A template contains all relevant entities for that specific master data entity. * Cost centers * Departments * Employees * Service contracts * Suppliers (Vendor) All relations from another entity have minimum read access to the 'Description'. This way, you can quickly receive the correct information. --- # 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://developer.ultimo.net/api-key-templates/master-data.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.