An error occurred (ValidationError) when calling the DescribeStacks operation: 1 validation error detected: Value ‘2sl_batch’ at ‘stackName’ failed to satisfy constraint: Member must satisfy regular expression pattern: [a-zA-Z][-a-zA-Z0–9]*|arn:[-a-zA-Z0–9:/._+]*

Error with name of CloudFormation stack

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While trying to run an aws cloudformation deploy command I got this error:

An error occurred (ValidationError) when calling the DescribeStacks operation: 1 validation error detected: Value ‘2sl_batch’ at ‘stackName’ failed to satisfy constraint: Member must satisfy regular expression pattern: [a-zA-Z][-a-zA-Z0–9]*|arn:[-a-zA-Z0–9:/._+]*

CloudFormation doesn’t allow the underscore _ character in stack names or names that starts with numbers.

Instead of this:

aws cloudformation --stack-name 2sl_batch ....