Accounts Payable Advisory No. 9

Accounts Payable Advisory
Office of Operations
Bureau of State Expenditures
Advisory Name
Complex Entity – National Grid
Date Issued
Date Last Updated


Making Payments to National Grid


This advisory has been updated to reflect new requirements for entering a unique invoice number on vouchers payable to National Grid, as discussed below.

Consistent with the Guide to Financial Operations (GFO), Chapter XII, Section 5.C - Selecting the Appropriate Vendor and Address Sequence, Business Units must select the correct Vendor ID and Address Sequence when processing payments to vendors. Improper preparation of vouchers payable to National Grid may delay payment crediting and Business Units may experience unintended service interruptions.

Also, consistent with the GFO, Chapter XII, Section 5.B - Unique Invoice Number Requirements, Business Units must ensure there is a unique invoice number for each voucher. Due to National Grid’s billing cycle, Business Units may receive two invoices with service end dates within the same calendar month. To comply with the Unique Invoice Number Requirements described above, Business Units are now required to enter in the invoice number field their ten-digit account number followed by the two-digit month, two-digit day, and two-digit year of the invoice ending service date.

For information on how to process payments to National Grid, please refer to the GFO, Chapter XII, Section 6.Z.5 - Processing Payments to National Grid.