<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:01a0c500-457e-7561-b60a-12c437570d3a,g:78b04c34-bc2c-4b02-8d8b-a329f615acb9-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:syasl="http://symetra.com/20260923" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://symetra.com/20260923">
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/vip-n4/2025" schemaLocation="https://xbrl.sec.gov/vip/2025/vip-n4-2025.xsd"/>
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="syasl-20260923_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="syasl-20260923_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="syasl-20260923_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
    </xs:appinfo>
  </xs:annotation>
  <xs:element id="syasl_Nasdaq100MarketIndex6YearPointToPointWithBufferCapAndParticipationRate10Buffer2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" abstract="true" name="Nasdaq100MarketIndex6YearPointToPointWithBufferCapAndParticipationRate10Buffer2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syasl_CapRateReturnLimitDuringSurrenderChargePeriodMember" abstract="true" name="CapRateReturnLimitDuringSurrenderChargePeriodMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syasl_CapRateReturnLimitAfterSurrenderChargePeriodMember" abstract="true" name="CapRateReturnLimitAfterSurrenderChargePeriodMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syasl_Nasdaq100MarketIndex6YearPointToPointWithBufferCapAndParticipationRate20Buffer2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" abstract="true" name="Nasdaq100MarketIndex6YearPointToPointWithBufferCapAndParticipationRate20Buffer2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syasl_Nasdaq100MarketIndex6YearPointToPointWithBufferCapAndParticipationRate100Buffer2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" abstract="true" name="Nasdaq100MarketIndex6YearPointToPointWithBufferCapAndParticipationRate100Buffer2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syasl_Russell2000MarketIndex6YearPointToPointWithBufferCapAndParticipationRate10Buffer2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" abstract="true" name="Russell2000MarketIndex6YearPointToPointWithBufferCapAndParticipationRate10Buffer2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syasl_Russell2000MarketIndex6YearPointToPointWithBufferWithChargeCapAndParticipationRate10BufferWithCharge2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" abstract="true" name="Russell2000MarketIndex6YearPointToPointWithBufferWithChargeCapAndParticipationRate10BufferWithCharge2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syasl_Russell2000MarketIndex6YearPointToPointWithBufferCapAndParticipationRate20Buffer2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" abstract="true" name="Russell2000MarketIndex6YearPointToPointWithBufferCapAndParticipationRate20Buffer2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syasl_Russell2000MarketIndex6YearPointToPointWBufferWithChargeCapAndParRate20BufferWithCharge2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" abstract="true" name="Russell2000MarketIndex6YearPointToPointWBufferWithChargeCapAndParRate20BufferWithCharge2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syasl_Russell2000MarketIndex6YearPointToPointWithBufferCapAndParticipationRate100Buffer2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" abstract="true" name="Russell2000MarketIndex6YearPointToPointWithBufferCapAndParticipationRate100Buffer2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syasl_SP500MarketIndex6YearPointToPointWithBufferCapAndParticipationRate1Buffer2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" abstract="true" name="SP500MarketIndex6YearPointToPointWithBufferCapAndParticipationRate1Buffer2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syasl_SP500MarketIndex6YearPointToPointWithBufferWithChargeCapAndParticipationRate1BufferWithCharge2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" abstract="true" name="SP500MarketIndex6YearPointToPointWithBufferWithChargeCapAndParticipationRate1BufferWithCharge2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syasl_SP500MarketIndex6YearPointToPointWithBufferCapAndParticipationRate10Buffer2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" abstract="true" name="SP500MarketIndex6YearPointToPointWithBufferCapAndParticipationRate10Buffer2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syasl_SP500MarketIndex6YearPointToPointWithBufferWithChargeCapAndParticipationRate10BufferWithCharge2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" abstract="true" name="SP500MarketIndex6YearPointToPointWithBufferWithChargeCapAndParticipationRate10BufferWithCharge2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syasl_SP500MarketIndex6YearPointToPointWithBufferCapAndParticipationRate20Buffer2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" abstract="true" name="SP500MarketIndex6YearPointToPointWithBufferCapAndParticipationRate20Buffer2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syasl_SP500MarketIndex6YearPointToPointWithBufferCapAndParticipationRate30Buffer2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" abstract="true" name="SP500MarketIndex6YearPointToPointWithBufferCapAndParticipationRate30Buffer2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syasl_SP500MarketIndex6YearPointToPointWithBufferWithChargeCapAndParticipationRate20BufferWithCharge2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" abstract="true" name="SP500MarketIndex6YearPointToPointWithBufferWithChargeCapAndParticipationRate20BufferWithCharge2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syasl_SP500MarketIndex6YearPointToPointWithBufferWithChargeCapAndParticipationRate30BufferWithCharge2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" abstract="true" name="SP500MarketIndex6YearPointToPointWithBufferWithChargeCapAndParticipationRate30BufferWithCharge2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syasl_SP500MarketIndex6YearPointToPointWithBufferCapAndParticipationRate100Buffer2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" abstract="true" name="SP500MarketIndex6YearPointToPointWithBufferCapAndParticipationRate100Buffer2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syasl_SP500MarketIndex6YearPointToPointWithBufferPlusCapAndParticipationRate10BufferPlus2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" abstract="true" name="SP500MarketIndex6YearPointToPointWithBufferPlusCapAndParticipationRate10BufferPlus2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syasl_SP500MarketIndex6YearPointToPointWithBufferPlusCapAndParticipationRate20BufferPlus2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" abstract="true" name="SP500MarketIndex6YearPointToPointWithBufferPlusCapAndParticipationRate20BufferPlus2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syasl_SP500MarketIndex6YearPointToPointWithBufferPlusCapAndParticipationRate30BufferPlus2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" abstract="true" name="SP500MarketIndex6YearPointToPointWithBufferPlusCapAndParticipationRate30BufferPlus2CapDuringSurrenderChargePeriodAnd1Thereafter100ParticipationRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
