The official SWIFT or BIC code designated for Grong Sparebank to process international incoming wire transfers and cross-border payments is GRONNO21. When formatted for full eleven-character electronic messaging requirements by international remitting banks, it is frequently written as GRONNO21XXX, where the "GRON" segment represents the unique bank identifier, "NO" denotes Norway, "21" indicates the regional location code, and the trailing characters point directly to the primary head office operations located in Grong. Senders must combine this code with the recipient's proper Norwegian IBAN to ensure the electronic funds transfer routes accurately through global clearing systems without administrative delays.