Error Code and Location

Definition: This field identifies an erroneous segment in another message. The second component is an index if there is more than one segment of type <segment ID>. For systems that do not use the HL7 Encoding Rules, the data item number may be used for the third component. The fourth component references a locally-defined error table (as a CE data type) is restricted from having any subcomponents as the subcomponent separator is now the CE's component separator.