The following information is applicable to data set specifications (DSS) only.
An indicator of whether a data element or DSS is mandatory, optional or conditional for the data collection or transmission.
Mandatory completion.
Mandatory completion signifies that the data element/DSS must be included.
Conditional completion signifies that under specific criteria, a data element/DSS must be included. The criterion by which a value can be included can be specified within the Verification rules attribute.
Optional completion signifies that a data element/data set specification may or may not be collected.
To add the obligation: