Change request field validation rules

The Field Validation A process to test the veracity and integrity of metering data. Codes are based on Data Source Codes. For any Change Reason Code A code that identifies a type of Change Request. It defines rules such as what NMI information can be updated and which roles will receive a Change Request Notification each time the Change Request Status is updated., the Field Validation Rules As described in the CATS Procedures, they specify, for each Change Reason Code, the fields in MSATS populated at the creation of a transaction or at other times in the life cycle of a transaction. specify:

1. Which fields are mandatory when the Transaction is Initiated.

2. Which fields are optional when the Transaction is Initiated.

3. Which fields must be in the NMI Master Record for the Transaction to proceed from Pending Validation to Requested.
   If they are not present, which Participant must supply them

4. If the Actual Change Date must be obtained from another participant for NMIs where the Metering Installations are manually read.
   If yes, who must supply it.

The obligations on participants arising from the allocation of the Field Validation Rules The National Gas or Electricity rules., are detailed in the section where the Change Reason Code applies.