The error "HTTP/1.1 405 Method Not Allowed" occurs when the HTTP method used in the request is not supported by the server for the specified URL. Servers typically allow specific methods (GET, POST, PUT, DELETE, etc.) for different HTTP endpoints.

For your code, here are potential issues and solutions:

1. URL Mapping Issue: If the server is configured to accept only certain HTTP methods for this endpoint (e.g., GET), trying to send a POST request will result in the "Method Not Allowed" error. You need to verify the endpoint's supported HTTP methods. If the endpoint requires POST but your URLMap configuration is set only to GET, then you must add the POST method to the allowed methods list in the URLMap configuration [1].

2. Correct Method Implementation: Ensure that the endpoint is properly implemented to handle all necessary HTTP methods (GET, POST, etc.). When implementing REST APIs, different HTTP verbs should typically map to the appropriate operations without duplicating insert/delete actions inside the URL. For CRUD operations, it is better to keep the same URL and differentiate actions with HTTP methods. For example:

   • POST for creating a resource
   • DELETE for deleting a resource
     You may need to modify the server configuration or code accordingly [1].

3. Content Type Header: Ensure the ContentType header matches what the server expects. You set application/json in your code, but if the server expects application/x-www-form-urlencoded for the POST body, you will need to modify this. Also, confirm whether the token is being passed in the correct format and location (e.g., as a query parameter, JSON payload, etc.) that matches the endpoint specifications [1].

Refer to suggestions for RESTful implementation and troubleshooting configurations in your application [1].

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Local.PD.Linkage.Definition.Individual is typically a configuration within the EMPI (Enterprise Master Patient Index) process that uses the "NICE" approach for patient data matching. Specifically, it handles these four steps:

1. Normalize: Standardizes patient data (e.g., converting to lower case, removing punctuation).
2. Index: Creates indexes based on specific patient fields for matching.
3. Compare: Assigns weights based on data field matches to calculate a final score.
4. Evaluate: Decides actions based on the score thresholds, such as automatic linking or requiring human confirmation [1].

The Local.PD.Linkage.Definition.Individual setup would use weights assigned to different parameters for accurate matching. Positive weights increase the likelihood of being treated as a match, while negative weights reduce it.

If using the MLE Calibration Monitor indicates that values should not be negative, it's possible that the weights for Given Name or Family Name need optimization, so that logical matches are identified based on thresholds such as autolink or review thresholds defined in configuration [1].

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The CSPGatewayLatency alert indicates that the latency experienced in the CSP gateway exceeded the predefined maximum value. Here are the details:

1. Understanding CSPGatewayLatency Alert:
   CSPGatewayLatency measures the delay involved in processing requests between the CSP gateway and your web server. The alert you received indicates that the latency has far surpassed the maximum allowable value (2000 ms), reaching values exceeding 5000 ms. This suggests a significant performance issue potentially caused by a delay in processing requests made to the web server or server-side resources [1][2].

2. Relation to Server Response Timeout:
   While your suspicion linking CSPGatewayLatency to server response timeout is reasonable, these are distinct metrics. The Server Response Timeout is explicitly the maximum allowed time for the target InterSystems IRIS or Caché server to respond to incoming requests. On the other hand, CSPGatewayLatency is broader, detecting higher latency in communication specifically at the gateway level, which could result from multiple latency factors, not just server response time exceeding its timeout [1].

3. Investigating and Managing This Alert:
   a. Check logs (e.g., WebGateway Event Log) for more in-depth details about what requests might be causing increased latency [3].
   b. Examine server-side performance metrics to identify potential bottlenecks—this could involve queries or processes that exceeded the Server Response Timeout set in your configurations [1][2].
   c. Assess current CSP Gateway configuration, such as limits on server connections (max connections restrictions) and adjust as needed [2].

Upon troubleshooting, you may identify that specific CSP requests or load on your server resulted in slow response times. You can address server-side bottlenecks, optimize database queries or increase relevant timeout thresholds cautiously.

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