diff --git a/MEC028/WAI/AP_INFO/WaiApInfo.robot b/MEC028/WAI/AP_INFO/WaiApInfo.robot
index c89f062b515abb27fec8e0c50308ea7551e48c0d..b8be44a7f29b9c6ff458bd4700b8fe237acc6189 100644
--- a/MEC028/WAI/AP_INFO/WaiApInfo.robot
+++ b/MEC028/WAI/AP_INFO/WaiApInfo.robot
@@ -63,7 +63,7 @@ Retrieve the access point information
     Should Be True    ${PIC_MEC_SYSTEM} == 1
     Should Be True    ${PIC_SERVICES} == 1
     Set Headers    {"Accept":"application/json"}
-    Set Headers    {"Content-Type":"application/json"}
+    Set Headers    {"Content-Type":"*/*"}
     Set Headers    {"Authorization":"${TOKEN}"}
     GET     ${apiRoot}/${apiName}/${apiVersion}/queries/ap/ap_information
     ${output}=    Output    response
@@ -74,7 +74,7 @@ Retrieve the access point information using filters
     Should Be True    ${PIC_MEC_SYSTEM} == 1
     Should Be True    ${PIC_SERVICES} == 1
     Set Headers    {"Accept":"application/json"}
-    Set Headers    {"Content-Type":"application/json"}
+    Set Headers    {"Content-Type":"*/*"}
     Set Headers    {"Authorization":"${TOKEN}"}
     GET     ${apiRoot}/${apiName}/${apiVersion}/queries/ap/ap_information?filter=${filter}
     ${output}=    Output    response
diff --git a/MEC028/WAI/EXT_SUB/ExistingSubscription.robot b/MEC028/WAI/EXT_SUB/ExistingSubscription.robot
index f6b112349983c86e2f3148fb92a7fbfa6e2d7515..9ebcad0533c346a9a3ac05a774d14266b3098931 100644
--- a/MEC028/WAI/EXT_SUB/ExistingSubscription.robot
+++ b/MEC028/WAI/EXT_SUB/ExistingSubscription.robot
@@ -87,7 +87,7 @@ Retrieve existing subscription information
     Should Be True    ${PIC_MEC_SYSTEM} == 1
     Should Be True    ${PIC_SERVICES} == 1
     Set Headers    {"Accept":"application/json"}
-    Set Headers    {"Content-Type":"application/json"}
+    Set Headers    {"Content-Type":"*/*"}
     Set Headers    {"Authorization":"${TOKEN}"}
     GET     ${apiRoot}/${apiName}/${apiVersion}/subscriptions/${SUB_ID}
     ${output}=    Output    response
@@ -99,7 +99,7 @@ Modify existing subscription information
     Should Be True    ${PIC_MEC_SYSTEM} == 1
     Should Be True    ${PIC_SERVICES} == 1
     Set Headers    {"Accept":"application/json"}
-    Set Headers    {"Content-Type":"application/json"}
+    Set Headers    {"Content-Type":"*/*"}
     Set Headers    {"Authorization":"${TOKEN}"}
     ${path}    Catenate    SEPARATOR=      jsons/     ${content}
     ${body}    Get File    ${path}
@@ -113,7 +113,7 @@ Remove existing subscription information
     Should Be True    ${PIC_MEC_SYSTEM} == 1
     Should Be True    ${PIC_SERVICES} == 1
     Set Headers    {"Accept":"application/json"}
-    Set Headers    {"Content-Type":"application/json"}
+    Set Headers    {"Content-Type":"*/*"}
     Set Headers    {"Authorization":"${TOKEN}"}
     DELETE     ${apiRoot}/${apiName}/${apiVersion}/subscriptions/${SUB_ID}
     ${output}=    Output    response
diff --git a/MEC028/WAI/STA_INFO/WaiStaInfo.robot b/MEC028/WAI/STA_INFO/WaiStaInfo.robot
index 0968d7d193e32494b44be8b8970435cc0ec1c632..3c58c8defbb3de3d988f72864d1b433ef7aaf22c 100644
--- a/MEC028/WAI/STA_INFO/WaiStaInfo.robot
+++ b/MEC028/WAI/STA_INFO/WaiStaInfo.robot
@@ -63,7 +63,7 @@ Retrieve the station information
     Should Be True    ${PIC_MEC_SYSTEM} == 1
     Should Be True    ${PIC_SERVICES} == 1
     Set Headers    {"Accept":"application/json"}
-    Set Headers    {"Content-Type":"application/json"}
+    Set Headers    {"Content-Type":"*/*"}
     Set Headers    {"Authorization":"${TOKEN}"}
     GET     ${apiRoot}/${apiName}/${apiVersion}/queries/sta/sta_information
     ${output}=    Output    response
@@ -74,7 +74,7 @@ Retrieve the station information using filters
     Should Be True    ${PIC_MEC_SYSTEM} == 1
     Should Be True    ${PIC_SERVICES} == 1
     Set Headers    {"Accept":"application/json"}
-    Set Headers    {"Content-Type":"application/json"}
+    Set Headers    {"Content-Type":"*/*"}
     Set Headers    {"Authorization":"${TOKEN}"}
     GET     ${apiRoot}/${apiName}/${apiVersion}/queries/sta/sta_information?filter=${filter}
     ${output}=    Output    response
diff --git a/MEC028/WAI/SUB/WaiSubscription.robot b/MEC028/WAI/SUB/WaiSubscription.robot
index 190d970cff940cfc79b2c46eb1375adde8507775..29f2e29b73b5381308c0ca5d48c06838d08eb753 100644
--- a/MEC028/WAI/SUB/WaiSubscription.robot
+++ b/MEC028/WAI/SUB/WaiSubscription.robot
@@ -123,7 +123,7 @@ Retrieve the subscription information
     Should Be True    ${PIC_MEC_SYSTEM} == 1
     Should Be True    ${PIC_SERVICES} == 1
     #Set Headers    {"Accept":"application/json"}
-    Set Headers    {"Content-Type":"application/json"}
+    Set Headers    {"Content-Type":"*/*"}
     Set Headers    {"Authorization":"${TOKEN}"}
     GET     ${apiRoot}/${apiName}/${apiVersion}/subscriptions?subscription_type=${subscription_type}
     ${output}=    Output    response
@@ -133,7 +133,7 @@ Retrieve the subscription information using wrong endpoint
     Should Be True    ${PIC_MEC_SYSTEM} == 1
     Should Be True    ${PIC_SERVICES} == 1
     #Set Headers    {"Accept":"application/json"}
-    Set Headers    {"Content-Type":"application/json"}
+    Set Headers    {"Content-Type":"*/*"}
     Set Headers    {"Authorization":"${TOKEN}"}
     GET     ${apiRoot}/${apiName}/${apiVersion}/subscriptions_INVALID_URI
     ${output}=    Output    response