CDS BULK REPLACEMENT GROUP CODE is not required when the Commissioning Data Set Net Change Update Mechanism is used.

The Commissioning Data Set Bulk Replacement Update Mechanism process identifies previously transferred CDS Types that are to be replaced by the submitted Commissioning Data Set interchange. To do this the CDS BULK REPLACEMENT GROUP CODE must be used together with the following data items:

• CDS REPORT PERIOD START DATE
• CDS REPORT PERIOD END DATE
• CDS INTERCHANGE SENDER IDENTITY 

It is particularly important when using the Commissioning Data Set Bulk Replacement Update Mechanism for a CDS BULK REPLACEMENT GROUP CODE to contain all the relevant CDS Types for the extracted time period in a single Commissioning Data Set Interchange, e.g. the Finished General Episodes, Finished Delivery Episodes and Finished Birth Episodes in a Finished Episode Group.

For specific National Code usage in different data sets, see CDS BULK REPLACEMENT GROUP CODE.

This data element is also known by these names:

Context	Alias
plural	CDS BULK REPLACEMENT GROUP CODES