Federal Contracting Acronym
ACRN
Accounting Classification Reference Number
Plain-English definition
Accounting Classification Reference Numbers (ACRNs) help finance offices match CLINs and SLINs to appropriations and accounting strings. Contractors reference ACRNs when invoicing and when mapping internal cost accounts to government line items.
Why it matters
ACRN mismatches delay payment and complicate incurred-cost reconciliation.
Where you will see it
Award schedules, modification SF 30s, and payment system line mappings.
Example in context
Accounts payable maps CLIN 0001 to ACRN AA on each WAWF invoice line.