diff --git a/data/ipmi_raw_cmd_table.py b/data/ipmi_raw_cmd_table.py
index b4766dc..1e216bd 100644
--- a/data/ipmi_raw_cmd_table.py
+++ b/data/ipmi_raw_cmd_table.py
@@ -11,7 +11,8 @@
 # Refer:
 # openbmc/meta-openbmc-machines/meta-openpower/meta-ibm/meta-witherspoon/recipe
 # s-phosphor/ipmi/phosphor-ipmi-host/cipher_list.json
-valid_cipher_list = [1, 2, 3, 15, 16, 17]
+valid_cipher_list = [3, 17]
+unsupported_cipher_list = [1, 2, 15, 16]
 
 IPMI_RAW_CMD = {
     # Interface name
diff --git a/tests/ipmi/test_general_ipmi.robot b/tests/ipmi/test_general_ipmi.robot
index f4b9e4c..a75a5b4 100644
--- a/tests/ipmi/test_general_ipmi.robot
+++ b/tests/ipmi/test_general_ipmi.robot
@@ -24,7 +24,18 @@
     [Tags]  Verify_Supported_Cipher_List
 
     :FOR  ${cipher_level}  IN  @{valid_cipher_list}
-    \  Execute IPMI Command With Cipher  ${cipher_level}
+    \  ${status}=  Execute IPMI Command With Cipher  ${cipher_level}
+    \  Should Be Equal  ${status}  ${0}
+
+
+Verify Unsupported Cipher List
+    [Documentation]  Execute all unsupported cipher levels and verify error.
+    [Tags]  Verify_Unsupported_Cipher_List
+
+    :FOR  ${cipher_level}  IN  @{unsupported_cipher_list}
+    \  ${status}=  Execute IPMI Command With Cipher  ${cipher_level}
+    \  Should Be Equal  ${status}  ${1}
+
 
 Set Asset Tag With Valid String Length
     [Documentation]  Set asset tag with valid string length and verify.
@@ -778,4 +789,4 @@
     ...  ${SPACE}${HOST}${SPACE}${OPENBMC_HOST}${SPACE}mc info
 
     ${rc}  ${output}=  Run And Return RC and Output  ${ipmi_cmd}
-    Should Be Equal  ${rc}  ${0}  msg=${output}
+    [Return]  ${rc}