How can I specify in the XSD Schema that the element may be missing from the message?

Question

XSD

In the XSD schema, you can specify it like this:

<xs:sequence>
              <xs:element name="current_status" type="nsi_current_status" nillable="true"/>
              <xs:element name="status_date" type="xs:dateTime" nillable="true"/>

In an XML message, if there is no element value, for example status_date, then it will be something like this:

<current_status>7897986<current_status/>
<status_date>null<status_date>

Question:
How to XSD designate an element so that if there is no data, then the element would not be sent with an XML message?

Example similar with status_date:
<current_status>7897986<current_status/>

Answer 1

Occurrence indicators:
https://www.w3schools.com/xml/schema_complex_indic...
XSD Indicators
maxOccurs
minOccurs