diff --git a/code/Test_definitions/device-data-volume-checkDataVolume.feature b/code/Test_definitions/device-data-volume-checkDataVolume.feature
index f672f21..b88ea68 100644
--- a/code/Test_definitions/device-data-volume-checkDataVolume.feature
+++ b/code/Test_definitions/device-data-volume-checkDataVolume.feature
@@ -33,6 +33,7 @@ Feature: CAMARA Device Data Volume API, vwip - Operation checkDataVolume
     And the response body complies with the OAS schema at "#/components/schemas/CheckDataVolumeResponse"
     And the remaining data volume is above the requested threshold
     And the response body property "$.thresholdExceeded" is present and has value "true"
+    And the response body property "$.lastStatusTime" is present and either has a valid date-time format for a time in the past, or is null
 
   @device_data_volume_checkDataVolume_200.02_check_threshold_not_exceeded
   Scenario: Check if the remaining data volume for a device is not above a given threshold
@@ -45,6 +46,7 @@ Feature: CAMARA Device Data Volume API, vwip - Operation checkDataVolume
     And the response body complies with the OAS schema at "#/components/schemas/CheckDataVolumeResponse"
     And the remaining data volume is below the requested threshold
     And the response body property "$.thresholdExceeded" is present and has value "false"
+    And the response body property "$.lastStatusTime" is present and either has a valid date-time format for a time in the past, or is null
 
 #################
 # Error scenarios for management of input parameter device
diff --git a/code/Test_definitions/device-data-volume-retrieveDataVolume.feature b/code/Test_definitions/device-data-volume-retrieveDataVolume.feature
index 1acdf9a..5aed7f8 100644
--- a/code/Test_definitions/device-data-volume-retrieveDataVolume.feature
+++ b/code/Test_definitions/device-data-volume-retrieveDataVolume.feature
@@ -33,6 +33,7 @@ Feature: CAMARA Device Data Volume API, vwip - Operation retrieveDataVolume
     And the response header "x-correlator" has same value as the request header "x-correlator"
     And the response body complies with the OAS schema at "#/components/schemas/RetrieveDataVolumeResponse"
     And the response body property "$.dataVolumeCategory" is present and has value "<200MiB", "<1GiB",  "<5GiB", or ">=5GiB"
+    And the response body property "$.lastStatusTime" is present and either has a valid date-time format for a time in the past, or is null
 
 #################
 # Error scenarios for management of input parameter device