# errors for unknown reasons

**URL:** <https://forum.ansible.com/t/errors-for-unknown-reasons/27183>\
**Category:** Ansible Project\
**Created:** [April 4, 2018, 5:09am UTC](https://forum.ansible.com/t/errors-for-unknown-reasons/27183 "2018-04-04T05:09:40Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Paul\_Franks](https://avatars.discourse-cdn.com/v4/letter/p/6de8d8/32.png) [@Paul\_Franks](https://forum.ansible.com/u/Paul_Franks)\
**Post date:** [April 4, 2018, 5:09am UTC](https://forum.ansible.com/t/errors-for-unknown-reasons/27183/1 "2018-04-04T05:09:40Z")

</div>

Hi All - noob question - trying to create resources via ansible → CFN and i get an error i can’t understand

Failed to create stack pfranks-VPC: Parameter validation failed:\nUnknown parameter in input: "ClientRequestToken", must be one of: StackName, TemplateBody, TemplateURL, Parameters, DisableRollback, TimeoutInMinutes, NotificationARNs, Capabilities, ResourceTypes, RoleARN, OnFailure, StackPolicyBody, StackPolicyURL, Tags Parameter validation failed:\nUnknown parameter in input: "ClientRequestToken", must be one of: StackName, TemplateBody, TemplateURL, Parameters, DisableRollback, TimeoutInMinutes, NotificationARNs, Capabilities, ResourceTypes, RoleARN, OnFailure, StackPolicyBody, StackPolicyURL, Tags - \<class ‘botocore.exceptions.ParamValidationError’\>.

of course there is no “ClientRequestToken” in my code…

any help is appreciated!!

ansible 2.5.0  
config file = None  
configured module search path = [u’/Users/paul.franks/.ansible/plugins/modules’, u’/usr/share/ansible/plugins/modules’]  
ansible python module location = /usr/local/Cellar/ansible/2.5.0/libexec/lib/python2.7/site-packages/ansible  
executable location = /usr/local/bin/ansible  
python version = 2.7.14 (default, Mar 22 2018, 14:43:05) [GCC 4.2.1 Compatible Apple LLVM 9.0.0 (clang-900.0.39.2)]