diff --git a/cesql/cesql_tck/binary_math_operators.yaml b/cesql/cesql_tck/binary_math_operators.yaml
index 86c4826e..d1d0417e 100644
--- a/cesql/cesql_tck/binary_math_operators.yaml
+++ b/cesql/cesql_tck/binary_math_operators.yaml
@@ -58,11 +58,6 @@ tests:
   - name: Implicit casting, with both values string
     expression: "'5' + '3'"
     result: 8
-  - name: Implicit casting, with invalid boolean value
+  - name: Implicit casting, with boolean value
     expression: "5 + TRUE"
-    result: 5
-    error: cast
-  - name: Implicit casting, with invalid string value
-    expression: "'5avc4' + 10"
-    result: 10
-    error: cast
+    result: 6
diff --git a/cesql/cesql_tck/casting_functions.yaml b/cesql/cesql_tck/casting_functions.yaml
index 9b393c17..59349b89 100644
--- a/cesql/cesql_tck/casting_functions.yaml
+++ b/cesql/cesql_tck/casting_functions.yaml
@@ -67,34 +67,3 @@ tests:
   - name: Cast identity "abc"
     expression: STRING("abc")
     result: "abc"
-
-  - name: "'true' is a boolean"
-    expression: IS_BOOL('true')
-    result: true
-  - name: "'FALSE' is a boolean"
-    expression: IS_BOOL('FALSE')
-    result: true
-  - name: 1 is not a boolean
-    expression: IS_BOOL(1)
-    result: false
-  - name: "'abc' is not a boolean"
-    expression: IS_BOOL('abc')
-    result: false
-
-  - name: "'-1' is an int"
-    expression: IS_INT('-1')
-    result: true
-  - name: "'1' is an int"
-    expression: IS_INT('1')
-    result: true
-  - name: true is not an int
-    expression: IS_INT(TRUE)
-    result: false
-  - name: "'abc' is not an int"
-    expression: IS_INT('abc')
-    result: false
-
-  - name: IS_STRING does not exists
-    expression: IS_STRING('ABC')
-    error: missingFunction
-    result: false
diff --git a/cesql/cesql_tck/subscriptions_api_recreations.yaml b/cesql/cesql_tck/subscriptions_api_recreations.yaml
index 263f9e7b..d513e67c 100644
--- a/cesql/cesql_tck/subscriptions_api_recreations.yaml
+++ b/cesql/cesql_tck/subscriptions_api_recreations.yaml
@@ -18,6 +18,7 @@ tests:
   - name: Prefix filter on missing string extension
     expression: "myext LIKE 'custom%'"
     result: false
+    error: missingAttribute
 
   - name: Suffix filter (1)
     expression: "type like '%.error'"
@@ -37,6 +38,7 @@ tests:
   - name: Suffix filter on missing string extension
     expression: "myext LIKE '%ext'"
     result: false
+    error: missingAttribute
 
   - name: Exact filter (1)
     expression: "id = 'myId'"
@@ -56,6 +58,7 @@ tests:
   - name: Exact filter on missing string extension
     expression: "myext = 'customext'"
     result: false
+    error: missingAttribute
 
   - name: Prefix filter AND Suffix filter (1)
     expression: "id LIKE 'my%' AND source LIKE '%.ca'"
@@ -80,6 +83,7 @@ tests:
     result: false
     eventOverrides:
       type: "example.event.type"
+    error: missingAttribute
 
   - name: Prefix OR Suffix filter (1)
     expression: "id LIKE 'my%' OR source LIKE '%.ca'"
@@ -162,6 +166,7 @@ tests:
       id: "myId" 
       type: "example.event.warning"
       source: "http://localhost.localdomain"
+    error: missingAttribute