Update TTL in existing Route53 Resource Record set - php

Question

I have few A records in my Route53 Account. I want to bulk update the TTL for all of them.
The logic I'm using is that I get all the records using "ListResourceRecordSets" operation. Create following change object for each record.
array(
'Action' => 'UPSERT',
'ResourceRecordSet' => array(
'Name' => OLD_CNAME,
'Type' => 'A',
'TTL' => NEW_TTL,
'ResourceRecords' => array(array(
'Value' => OLD_IP
)),
));
Then I send a "ChangeResourceRecordSets" request with change objects created in last step.
Route53 is returning this error Validation errors: [ChangeBatch][Changes][0][Change][Action] must be one of "CREATE" or "DELETE" [ChangeBatch][Changes][1][Change][Action] must be one of "CREATE" or "DELETE" )
P.S. I couldn't find any UPSERT example for ChangeResourceRecordSets call.

Answer 1

Either update your AWS SDK to a later version that supports UPSERT or You first have to delete the record set(s) and then add them with the new changes.
UPSERT was added in early 2014: https://aws.amazon.com/blogs/aws/new-features-for-route-53-improved-health-checks-https-record-modification/
So you must have a really old SDK.
To do it without UPSERT:
array(
'Action' => 'DELETE',
'ResourceRecordSet' => array(
'Name' => OLD_CNAME,
'Type' => 'A',
'TTL' => OLD_TTL,
'ResourceRecords' => array(array(
'Value' => OLD_IP
)),
));
and then:
array(
'Action' => 'CREATE',
'ResourceRecordSet' => array(
'Name' => OLD_CNAME,
'Type' => 'A',
'TTL' => NEW_TTL,
'ResourceRecords' => array(array(
'Value' => OLD_IP
)),
));