Format/length:	an14
HES item:
National Codes:
Default Codes:

Notes:

Definition:
This provides a unique number (per sender identity) to identify every Commissioning Data Set Interchange submission.

For each Interchange submitted, the CDS INTERCHANGE CONTROL REFERENCE must be incremented by 1. The maximum value supported is n7 and wrap around from 9999999 to 1 must be supported.

Usage:
This is a mandatory data element when submitting Commissioning Data Set Interchanges and is used to uniquely identify and if required, to sequence check Commissioning Data Set submissions.

Although (for historical reasons) contained in a 14 alpha-numeric format, a maximum value of 9999999 is permitted in the format of n7.

This control reference data may also be presented on Secondary Uses Service service messages and audit logs, etc.

CDS-XML Interchanges:

All CDS-XML interchanges submitted must contain a CDS INTERCHANGE CONTROL REFERENCE. 

This data element is also known by these names:

Context	Alias
plural	CDS INTERCHANGE CONTROL REFERENCES