delete_stack method for cloudformation client fails parameter validation

[ssdavidson]

Describe the bug

When I call client.delete_stack(StackName=stack_name, DeletionMode='FORCE_DELETE_STACK') using boto3, I get the following error:
Parameter validation failed: Unknown parameter in input: "DeletionMode", must be one of: StackName, RetainResources, RoleARN, ClientRequestToken

This only happens in boto3-1.34.25. When I use boto3-1.34.144, the call works as expected.

Regression Issue

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Expected Behavior

Initiate forced deletion of given stack name.

Current Behavior

Parameter validation error that lists all of the other parameters of the delete_stack method.

Reproduction Steps

pip install boto3==1.34.25
python

import boto3
client=boto3.client('cloudformation')
stack_name = an existing stack
client.delete_stack(StackName=stack_name, DeletionMode='FORCE_DELETE_STACK')

Possible Solution

Revert to the method definition in 1.34.144

Additional Information/Context

No response

SDK version used

1.34.25

Environment details (OS name and version, etc.)

AWS Linux

[tim-finnigan]

Thanks for reaching out. The Parameter validation failed: Unknown parameter in input error often indicates that you're using an older version of boto3. It looks like support for DeletionMode was added in 1.34.111 per the CHANGELOG. That parameter is present in the latest documentation for delete_stack, and not in the older version 1.34.25. I think this issue can be closed but if you have any follow up questions let us know.

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