Desk API Errors all of a sudden

Hello,

We have been using the Zoho Desk REST API for a while now. We've upgraded to OAuth already. We suddenly have started getting errors like this:

{"errorCode":"INVALID_DATA","message":"The data is invalid due to validation restrictions","errors":

[{"fieldName":"cf_date","errorType":"invalid","errorMessage":""},

{"fieldName":"cf_conference_recording","errorType":"invalid","errorMessage":""}]}

I don't believe we've changed any settings/configuration on our end in this department. Have there been any changes to the Zoho Desk API backend recently?

I also checked to see if the date format we were used was changed on your end (we've always used "yyyy-MM-dd HH:mm:ss", but this is still the format we are using).

Please help as soon as possible. This is URGENT for us as this is impacting our daily business.

Thanks