<div class="doc-version" data-version="unstable">
<p>An operation to apply to the Cart.</p>
<h2 id="input-fields-unstable">Fields</h2>
<ul class="fields-list">
<li>
<div class="field">
<div class="field-name">
expand
(<a href="/api/functions/reference/cart-transform/graphql/common-objects/expandoperation"><code>ExpandOperation</code></a>)
</div>
</div>
<div>
<p>A cart line expand operation.</p>
</div>
</li>
<li>
<div class="field">
<div class="field-name">
merge
(<a href="/api/functions/reference/cart-transform/graphql/common-objects/mergeoperation"><code>MergeOperation</code></a>)
</div>
</div>
<div>
<p>A cart line merge operation.</p>
</div>
</li>
<li>
<div class="field">
<div class="field-name">
update
(<a href="/api/functions/reference/cart-transform/graphql/common-objects/updateoperation"><code>UpdateOperation</code></a>)
</div>
</div>
<div>
<p>A cart line update operation. Only stores on the Shopify Plus plan can use apps with update operations.</p>
</div>
</li>
</ul>
</div>
<div class="doc-version doc-version--rc" data-version="2025-07">
<p>An operation to apply to the Cart.</p>
<h2 id="input-fields-2025-07">Fields</h2>
<ul class="fields-list">
<li>
<div class="field">
<div class="field-name">
expand
(<a href="/api/functions/reference/cart-transform/graphql/common-objects/expandoperation"><code>ExpandOperation</code></a>)
</div>
</div>
<div>
<p>A cart line expand operation.</p>
</div>
</li>
<li>
<div class="field">
<div class="field-name">
merge
(<a href="/api/functions/reference/cart-transform/graphql/common-objects/mergeoperation"><code>MergeOperation</code></a>)
</div>
</div>
<div>
<p>A cart line merge operation.</p>
</div>
</li>
<li>
<div class="field">
<div class="field-name">
update
(<a href="/api/functions/reference/cart-transform/graphql/common-objects/updateoperation"><code>UpdateOperation</code></a>)
</div>
</div>
<div>
<p>A cart line update operation. Only stores on the Shopify Plus plan can use apps with update operations.</p>
</div>
</li>
</ul>
</div>
<div class="doc-version doc-version--latest selected" data-version="2025-04">
<p>An operation to apply to the Cart.</p>
<h2 id="input-fields-2025-04">Fields</h2>
<ul class="fields-list">
<li>
<div class="field">
<div class="field-name">
expand
(<a href="/api/functions/reference/cart-transform/graphql/common-objects/expandoperation"><code>ExpandOperation</code></a>)
</div>
</div>
<div>
<p>A cart line expand operation.</p>
</div>
</li>
<li>
<div class="field">
<div class="field-name">
merge
(<a href="/api/functions/reference/cart-transform/graphql/common-objects/mergeoperation"><code>MergeOperation</code></a>)
</div>
</div>
<div>
<p>A cart line merge operation.</p>
</div>
</li>
<li>
<div class="field">
<div class="field-name">
update
(<a href="/api/functions/reference/cart-transform/graphql/common-objects/updateoperation"><code>UpdateOperation</code></a>)
</div>
</div>
<div>
<p>A cart line update operation. Only stores on the Shopify Plus plan can use apps with update operations.</p>
</div>
</li>
</ul>
</div>
<div class="doc-version" data-version="2025-01">
<p>An operation to apply to the Cart.</p>
<h2 id="input-fields-2025-01">Fields</h2>
<ul class="fields-list">
<li>
<div class="field">
<div class="field-name">
expand
(<a href="/api/functions/reference/cart-transform/graphql/common-objects/expandoperation"><code>ExpandOperation</code></a>)
</div>
</div>
<div>
<p>A cart line expand operation.</p>
</div>
</li>
<li>
<div class="field">
<div class="field-name">
merge
(<a href="/api/functions/reference/cart-transform/graphql/common-objects/mergeoperation"><code>MergeOperation</code></a>)
</div>
</div>
<div>
<p>A cart line merge operation.</p>
</div>
</li>
<li>
<div class="field">
<div class="field-name">
update
(<a href="/api/functions/reference/cart-transform/graphql/common-objects/updateoperation"><code>UpdateOperation</code></a>)
</div>
</div>
<div>
<p>A cart line update operation. Only stores on the Shopify Plus plan can use apps with update operations.</p>
</div>
</li>
</ul>
</div>
<div class="doc-version" data-version="2024-10">
<p>An operation to apply to the Cart.</p>
<h2 id="input-fields-2024-10">Fields</h2>
<ul class="fields-list">
<li>
<div class="field">
<div class="field-name">
expand
(<a href="/api/functions/reference/cart-transform/graphql/common-objects/expandoperation"><code>ExpandOperation</code></a>)
</div>
</div>
<div>
<p>A cart line expand operation.</p>
</div>
</li>
<li>
<div class="field">
<div class="field-name">
merge
(<a href="/api/functions/reference/cart-transform/graphql/common-objects/mergeoperation"><code>MergeOperation</code></a>)
</div>
</div>
<div>
<p>A cart line merge operation.</p>
</div>
</li>
<li>
<div class="field">
<div class="field-name">
update
(<a href="/api/functions/reference/cart-transform/graphql/common-objects/updateoperation"><code>UpdateOperation</code></a>)
</div>
</div>
<div>
<p>A cart line update operation. Only stores on the Shopify Plus plan can use apps with update operations.</p>
</div>
</li>
</ul>
</div>
<div class="doc-version" data-version="2024-07">
<p>An operation to apply to the Cart.</p>
<h2 id="input-fields-2024-07">Fields</h2>
<ul class="fields-list">
<li>
<div class="field">
<div class="field-name">
expand
(<a href="/api/functions/reference/cart-transform/graphql/common-objects/expandoperation"><code>ExpandOperation</code></a>)
</div>
</div>
<div>
<p>A cart line expand operation.</p>
</div>
</li>
<li>
<div class="field">
<div class="field-name">
merge
(<a href="/api/functions/reference/cart-transform/graphql/common-objects/mergeoperation"><code>MergeOperation</code></a>)
</div>
</div>
<div>
<p>A cart line merge operation.</p>
</div>
</li>
<li>
<div class="field">
<div class="field-name">
update
(<a href="/api/functions/reference/cart-transform/graphql/common-objects/updateoperation"><code>UpdateOperation</code></a>)
</div>
</div>
<div>
<p>A cart line update operation. Only stores on the Shopify Plus plan can use apps with update operations.</p>
</div>
</li>
</ul>
</div>