---
type: "sdc-page"
title: "SDC: StructureDefinition-sdc-questionnaire-sourceStructureMap-intro"
source: "sdc/input/pagecontent/StructureDefinition-sdc-questionnaire-sourceStructureMap-intro.xml"
---
# SDC: StructureDefinition-sdc-questionnaire-sourceStructureMap-intro

Additional details on the use of this extension can be found on the [Questionnaire Population (StructureMap-based)](/sdc-populate#structuremap-based-population) page. [Here](/sdc-structuredefinition-sdc-questionnaire-sourcequeries-intro) is an extension that provides the source data for a StructureMap to create a populated QuestionnaireResponse.