Stack creation is not completed at the timing of the creation request. Therefore it is necessary to confirm the status of creation of the stack using the following procedure.
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Click "Clear" on the upper part of the window to purge the currently displayed content.
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Confirm that the HTTP method is "GET".
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Select "orchestration" from the endpoints.
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Add "/stacks/<name of created stack>/<noted stack ID>" to the end of the displayed URI.
*It is only partially shown in the image, but input all of the stack ID.
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Click "Execute API".
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When "Response": 200 is returned in the Response field, the information was successfully obtained.
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In the response field, check Body > stack > stack_status, and if the value is "CREATE_COMPLETE", then creation is complete.
If the value of stack_status is "CREATE_IN_PROGRESS", creation is still being performed, so wait for a while and then execute the API again.
If the value of stack_status is "CREATE_FAILED", creation has failed for some reason. Refer to "Handling errors".