Definition: This represents a fire spreading and causes an additional fire/exposure. The initial incident is exposure zero.
NFIRS 5.0 relational edit validation rules are provided to ensure NFIRS data is consistent and correct for the fire/reporting concepts that are being modeled. Relational edits determine relationships between multiple fields / elements. These are the rules for ‘Exposure Number’.
|Relational Edit Rule 1||Transaction||Key must be Unique.|
|Relational Edit Rule 2||Content||Exposure number positive.|
‘Exposure Number’ is a key element, so it is in pretty much all transactions.
|Element Type||Numeric - Integer numbers (no decimal points). If the user has not provided information, an empty field should be transmitted. All integer values are assumed to be positive. Any fields which allow a negative integer value have been denoted with ‘+ or –’ in the comment field. Negative numbers should be transmitted with the minus sign preceding the digits. - - Starting at Zero|
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