Github user bhaisaab commented on a diff in the pull request: https://github.com/apache/cloudstack/pull/890#discussion_r41697298 --- Diff: api/src/org/apache/cloudstack/api/command/admin/guest/ListGuestOsMappingCmd.java --- @@ -44,10 +44,10 @@ ///////////////////////////////////////////////////// @Parameter(name = ApiConstants.ID, type = CommandType.UUID, entityType = GuestOsMappingResponse.class, required = false, description = "list mapping by its UUID") - private Long id; + private String id; --- End diff -- This can cause issues here, during Cmd object creation arguments values of keys ID and OS_TYPE_ID will be converted to a Long as the parameter type defined here is CommandType.UUID. This is where this happens: https://github.com/apache/cloudstack/blob/master/server/src/com/cloud/api/dispatch/ParamProcessWorker.java#L318 If you really want Strings here, please change the @Parameter annotation type to CommandType.STRING etc.
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