What is the meaning of the error message "StatusCode=400 -- Original Error: Code="InvalidResourceReference"" encountered while sending a request in Terraform?

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The error message "StatusCode=400 -- Original Error: Code="InvalidResourceReference"" in Terraform usually means that there is an error in the resource reference syntax. This can happen if the resource reference is incorrect, misspelled, or refers to a resource that does not exist. It can also occur if the resource reference is not in the expected format or if there are missing or incorrect parameters in the resource reference.