If it is System error code,
Error Code 200
System error code 200 means "The code segment cannot be greater than or equal to 64K." This error code may also display as "ERROR_RING2SEG_MUST_BE_MOVABLE" or as the value 0xC8.
following link contains complete list of "system" error codes and details.
http://pcsupport.about.com/od/findbyerrormessage/tp/system_error_codes.htm
If it is "200 OK",
The request has succeeded. The information returned with the response is dependent on the method used in the request, for example:
GET an entity corresponding to the requested resource is sent in the response;
HEAD the entity-header fields corresponding to the requested resource are sent in the response without any message-body;
POST an entity describing or containing the result of the action;
TRACE an entity containing the request message as received by the end server.
following link explains all internet and other error codes and details
http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html