diff --git a/src/test/cord-api/Tests/SingleInstanceTest.txt b/src/test/cord-api/Tests/SingleInstanceTest.txt
new file mode 100644
index 0000000..209f09c
--- /dev/null
+++ b/src/test/cord-api/Tests/SingleInstanceTest.txt
@@ -0,0 +1,88 @@
+*** Settings ***
+Documentation     Test suite for Instance creation for multiple subscribers with same "s_tag"
+Suite Setup       Read InputFile
+Test Template     Verify Instance Functionality
+Library           Collections
+Library           String
+Library           OperatingSystem
+Library           XML
+Library           RequestsLibrary
+Library           ../Framework/utils/utils.py
+Library           ../Framework/restApi.py
+
+*** Variables ***
+${USER}           admin
+${PASSWORD}       admin
+${PATHFILE}       ${CURDIR}/data/Subscriber.json
+${PATHFILE2}      ${CURDIR}/data/SingleInstance_VoltTenant.json
+
+*** Test Cases ***    TYPE                 LISTINDEX
+Test Create Instance-1
+                      SUBSCRIBER_CREATE    0
+
+Test Create Subscriber-2
+                      SUBSCRIBER_CREATE    1
+
+Test Create Subscriber-3
+                      SUBSCRIBER_CREATE    2
+
+Test Create Tenant-1
+                      TENANT_CREATE        0
+
+Test Create Tenant-2
+                      TENANT_CREATE        1
+
+Test Create Tenant-3
+                      TENANT_CREATE        2
+
+Test Instance creation validation
+                      INSTANCE_VALIDATE    0
+
+*** Keywords ***
+Read InputFile
+    ${subscriberList} =    utils.jsonToList    ${PATHFILE}    SubscriberInfo
+    Set Suite Variable    ${slist}    ${subscriberList}
+    ${voltList}=    utils.jsonToList    ${PATHFILE2}    voltSubscriberInfo
+    Set Suite Variable    ${vlist}    ${voltList}
+
+Verify Instance functionality
+    [Arguments]    ${type}    ${listIndex}
+    Run Keyword If    "${type}" == "SUBSCRIBER_CREATE"    Test Post Subscriber Create    ${listIndex}
+    Run Keyword If    "${type}" == "TENANT_CREATE"    Test Post volt Tenant Create    ${listIndex}
+    Run Keyword If    "${type}" == "INSTANCE_VALIDATE"    Test Instance Validation    ${listIndex}
+
+Test Post Subscriber Create
+    [Arguments]    ${listIndex}
+    ${subscriberList} =    Get Variable Value    ${slist}
+    ${subscriberDict}=    utils.listToDict    ${subscriberList}    ${listIndex}
+    ${api_result}=    restApi.ApiPost    TENANT_SUBSCRIBER    ${subscriberDict}
+    Should Be True    ${api_result}
+
+Test Post volt Tenant Create
+    [Arguments]    ${listIndex}
+    ${voltTenantList} =    Get Variable Value    ${vlist}
+    ${voltTenantDict}=    utils.listToDict    ${voltTenantList}    ${listIndex}
+    ${voltDict}=    Get From Dictionary    ${voltTenantDict}    voltTenant
+    ${account_num}=    Get From Dictionary    ${voltTenantDict}    account_num
+    ${get_result}=    restApi.ApiGet    TENANT_SUBSCRIBER
+    ${subscriberDict}=    utils.getDictFromListofDict    ${get_result}    account_num    ${account_num}
+    ${subscriberID}=    utils.getFieldValueFromDict    ${subscriberDict}    id
+    ${updatedVoltDict}=    utils.setFieldValueInDict    ${voltDict}    subscriber    ${subscriberID}
+    ${api_result}=    restApi.ApiPost    TENANT_VOLT    ${updatedVoltDict}
+    Should Be True    ${api_result}
+    # Verifying Get operation after POST
+    ${getVolt_result}=    restApi.ApiGet    TENANT_VOLT
+    ${getJsonDict}=    utils.getDictFromListOfDict    ${getVolt_result}    subscriber    ${subscriberID}
+    ${test_result}=    utils.compare_dict    ${voltDict}    ${getJsonDict}
+    Should Be True    ${test_result}
+
+Test Instance Validation
+    [Arguments]    ${listIndex}
+    ${get_result}=    restApi.ApiGet    TENANT_SUBSCRIBER
+    ${instance_id_fromvolt}=    utils.getAllFieldValues    ${get_result}    instance_id
+    ${instance_name}=    utils.getAllFieldValues    ${get_result}    instance_name
+    ${instance_id_name}=    Catenate    SEPARATOR=-    ${instance_name}    ${instance_id_fromvolt}
+    ${get_instanceresult}=    restApi.ApiGet    CORE_INSTANCES
+    ${instanceDict}=    utils.getDictFromListofDict    ${get_instanceresult}    instance_name    ${instance_id_name}
+    ${instance_id_fromCore}=    utils.getFieldValueFromDict    ${instanceDict}    id
+    Should Be Equal As Strings    ${instance_id_fromvolt}    ${instance_id_fromCore}
diff --git a/src/test/cord-api/Tests/data/SingleInstance_VoltTenant.json b/src/test/cord-api/Tests/data/SingleInstance_VoltTenant.json
new file mode 100644
index 0000000..7bf5b73
--- /dev/null
+++ b/src/test/cord-api/Tests/data/SingleInstance_VoltTenant.json
@@ -0,0 +1,31 @@
+{
+    "voltSubscriberInfo" : [
+    {
+      "voltTenant" : 
+       {
+         "s_tag" : "111",
+         "c_tag" : "222",
+         "subscriber" : ""
+       },
+       "account_num" : 20
+    },
+    {
+     "voltTenant" : 
+      {
+        "s_tag" : "111",
+        "c_tag" : "333",
+        "subscriber" : ""
+      },
+      "account_num" : 21
+    },
+    {
+     "voltTenant" :
+      {
+        "s_tag" : "111",
+        "c_tag" : "444",
+        "subscriber" : ""
+      },
+     "account_num" : 22
+    }
+ ]
+}