Linkage Case Number

May be up to 20 characters in length.  Must not contain a single zero only, a run of zeros only, a single alphabetic only, or the word NONE.  The first seven characters of the LKA cannot equal the first seven characters of the LKI. The only valid special character is the hyphen. The LKA must be valid for the LKI.  (There must be an ORI and matching OCA in the System.)

The Linkage ORI and OCA Fields are provided as separate fields to associate incidents that are handled by multiple departments. An agency entering a record which shares the same incident of a record entered by a different ORI and/or OCA can link the records by entering the associated ORI and OCA in the linkage fields (LKI and LKA).

In the entry message, the LKI and LKA Fields immediately follow the OCA Field entry. The message will be rejected if the LKI/LKA Fields are the same as the ORI/OCA Fields or if the first seven characters of the LKA Field are the same as the first seven characters of the LKI Field.