Update Resources with the PATCH HTTP Method in Apex Callouts To make partial or full updates to a resource in an HTTP web service, specify the PATCH method in the HttpRequest class. Previously, only the PUT method was supported for full updates. https://releasenotes.docs.salesforce.com/en-us/winter21/release-notes/rn_apex_callouts_patch.htm?edition=&impact= Use the Safe Navigation Operator to Avoid Null Pointer Exceptions Use the safe navigation …

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