diff --git a/src/SOL002/VNFFaultManagement/VNFFaultManagement.yaml b/src/SOL002/VNFFaultManagement/VNFFaultManagement.yaml
index 1697913f8668898dadf67522ef496436a2c5da94..64267f6d3426e7e867e5d63e74e92bac888e1bda 100644
--- a/src/SOL002/VNFFaultManagement/VNFFaultManagement.yaml
+++ b/src/SOL002/VNFFaultManagement/VNFFaultManagement.yaml
@@ -318,9 +318,9 @@ paths:
           description: >
             200 OK
 
-            The request was accepted and completed. The response body shall
-            contain attribute modifications for an ‘Individual alarm’
-            resource.
+            Shall be returned when the request was accepted and completed. 
+            The response body shall contain attribute modifications for 
+            an "Individual alarm" resource.
           headers:
             Content-Type:
               description: The MIME type of the body of the response.
@@ -358,14 +358,24 @@ paths:
           description: >
             409 CONFLICT
 
-            Error: The operation cannot be executed currently, due to a conflict with the state of
-            the "Individual alarm" resource.
-            Typically, this is due to the fact that the alarm is already in the state that is requested
-            to be set (such as trying to acknowledge an already-acknowledged alarm).
-            The response body shall contain a ProblemDetails structure, in which the "detail" attribute shall
-            convey more information about the error.
+            Shall be returned upon the following error: The operation cannot be executed 
+            currently, due to a conflict with the state of the "Individual alarm" resource.
+            Typically, this is due to the fact that the alarm is already in the state that 
+            is requested to be set (such as trying to acknowledge an already-acknowledged 
+            alarm).
+            The response body shall contain a ProblemDetails structure, in which the 
+            "detail" attribute shall convey more information about the error.
           $ref: "../../responses/SOL002SOL003_resp.yaml#/responses/409"
         412:
+          description: >
+            412 PRECONDITION FAILED
+
+            ErrorShall be returned upon the following error: A precondition given in an 
+            HTTP request header is not fulfilled.
+            Typically, this is due to an ETag mismatch, indicating that the resource was 
+            modified by another entity. 
+            The response body should contain a ProblemDetails structure, in which the 
+            "detail" attribute should convey more information about the error.
           $ref: "../../responses/SOL002SOL003_resp.yaml#/responses/412"
         416:
           $ref: "../../responses/SOL002SOL003_resp.yaml#/responses/416"