diff --git a/src/test/cord-api/Tests/WorkflowValidations/ATT_Test001.robot b/src/test/cord-api/Tests/WorkflowValidations/ATT_Test001.robot
index 1a7f964..91f3fa9 100644
--- a/src/test/cord-api/Tests/WorkflowValidations/ATT_Test001.robot
+++ b/src/test/cord-api/Tests/WorkflowValidations/ATT_Test001.robot
@@ -399,7 +399,7 @@
     Wait Until Keyword Succeeds    120s    10s    Check Remote System Reachability    False    ${olt_ip}
     Wait Until Keyword Succeeds    120s    10s    Check Remote System Reachability    True    ${olt_ip}
     Wait Until Keyword Succeeds    120s    10s    Openolt is Up    ${olt_ip}    ${olt_user}    ${olt_pass}
-    Sleep    15s
+    Sleep    300s
 
 Create Whitelist
     ${AttWhiteListDict}=    utils.listToDict    ${AttWhiteListList}    0
@@ -426,4 +426,4 @@
     CORD Delete    ${VOLT_SUBSCRIBER}    ${subscriber_id}
 
 Create VOLT
-    CORD Post    ${VOLT_DEVICE}    ${VoltDeviceDict}
\ No newline at end of file
+    CORD Post    ${VOLT_DEVICE}    ${VoltDeviceDict}