Troubleshooting tenant isolation for Lambda functions
This page addresses common issues that occur when using tenant isolation for AWS Lambda.
InvalidParameterValueException
Error : Tenant ID configuration not specified or passed to a function when tenant isolation is not enabled.
Common causes
This error occurs when invoking a tenant-isolated function without a tenant ID, or invoking a non-tenant-isolated function with a tenant ID.
Resolution
Add a tenant ID if the function has tenant isolation enabled, or remove the tenant ID if the function doesn't have tenant isolation enabled.
TooManyRequestsException
Error: Rate exceeded
Common causes
In addition to rate limiting based on maximum concurrent executions and function scaling rate, Lambda limits the maximum number of tenant-aware execution environments (active or idle) that can exist at a time to 2,500 for every 1,000 concurrent executions of your function.
Resolution
To fix this issue, you can either lower the rate at which invocation requests with unique tenant identifiers are made, implement retries with backoff and jitter
