The manifest.xml should allow more custom field entity types.

Currently we suggest to add the entity order_line_item.

https://github.com/shopware/platform/blob/trunk/src/Core/Framework/App/Manifest/Schema/manifest-2.0.xsd

Currently available types:


<xs:complexType name="entity-list">
<xs:choice maxOccurs="unbounded">
<xs:element name="product" type="empty" minOccurs="0"/>
<xs:element name="order" type="empty" minOccurs="0"/>
<xs:element name="category" type="empty" minOccurs="0"/>
<xs:element name="customer" type="empty" minOccurs="0"/>
<xs:element name="customer_address" type="empty" minOccurs="0"/>
<xs:element name="media" type="empty" minOccurs="0"/>
<xs:element name="product_manufacturer" type="empty" minOccurs="0"/>
<xs:element name="sales_channel" type="empty" minOccurs="0"/>
<xs:element name="landing_page" type="empty" minOccurs="0"/>
<xs:element name="promotion" type="empty" minOccurs="0"/>
<xs:element name="product_stream" type="empty" minOccurs="0"/>
<xs:element name="property_group" type="empty" minOccurs="0"/>
<xs:element name="product_review" type="empty" minOccurs="0"/>
<xs:element name="event_action" type="empty" minOccurs="0"/>
<xs:element name="country" type="empty" minOccurs="0"/>
<xs:element name="currency" type="empty" minOccurs="0"/>
<xs:element name="customer_group" type="empty" minOccurs="0"/>
<xs:element name="delivery_time" type="empty" minOccurs="0"/>
<xs:element name="document_base_config" type="empty" minOccurs="0"/>
<xs:element name="language" type="empty" minOccurs="0"/>
<xs:element name="number_range" type="empty" minOccurs="0"/>
<xs:element name="payment_method" type="empty" minOccurs="0"/>
<xs:element name="rule" type="empty" minOccurs="0"/>
<xs:element name="salutation" type="empty" minOccurs="0"/>
<xs:element name="shipping_method" type="empty" minOccurs="0"/>
<xs:element name="tax" type="empty" minOccurs="0"/>
</xs:choice>
</xs:complexType>