Is it possible to integrate AWS SNS and AWS SQS FIFO queue
This scenario is currently impossible because SNS is not compatible with FIFO SQS in AWS. It is only supported for standard queues. This is clearly mentioned in the AWS docs in this link, under special notes.
EDIT
It's also listed in the SNS FAQs, under Are Amazon SQS FIFO queues compatible with Amazon Simple Notification Service (SNS)?
The answer's still the same as of July 26, 2020: Amazon SNS does not currently support forwarding messages to Amazon SQS FIFO queues. You can use SNS to forward messages to standard queues.
SNS FIFO just launched. SNS can now integrate with SQS FIFO https://aws.amazon.com/blogs/aws/introducing-amazon-sns-fifo-first-in-first-out-pub-sub-messaging/