Guidance on data latency

Introduction

The following notes on data latency are gathered from Subject Matter Expert guidance and responses to participant questions.

Maximum Allowable Data Latency

The CDS does not specify a maximum allowable data latency instead it suggests that needs to be commensurate to data presented via other primary digital channels. The idea is that there should not be a systemic difference in latency between CDR channel and other digital banking channels.

Interpretation

The term commensurate in the CDS is deliberately ambiguous to leave it to the interpretation to the Data Holders.

If an Accredited Data Recipient or Customer notices data discrepancies and complains then it is likely the implementation is not commensurate. 

Primary channel scenario

For a Bank that provides a mobile application as their primary digital experience, the balance presented via a CDR Banking API should be the same as the balance presented through the mobile application.