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AWS::Cognito::UserPool StringAttributeConstraints
The minimum and maximum length values of an attribute that is of the string type, for
            example custom:department.
Syntax
To declare this entity in your AWS CloudFormation template, use the following syntax:
Properties
- MaxLength
- 
                    The maximum length of a string attribute value. Must be a number less than or equal to 2^1023, represented as a string with a length of 131072 characters or fewer.Required: No Type: String Minimum: 0Maximum: 131072Update requires: No interruption 
- MinLength
- 
                    The minimum length of a string attribute value. Required: No Type: String Minimum: 0Maximum: 131072Update requires: No interruption