Split GTIN4 into GS1 Company Prefix and GS1 ID for Item Sync in NetSuite-TrackTraceRX Integration

Function to split GTIN4 into GS1 Company Prefix and GS1 ID

function splitGTIN(gtin) {
    if (gtin.length !== 14) {
        throw new Error("GTIN must be 14 digits long.");
    }

    // Extract GS1 Company Prefix: remove the first digit and take the next 7 digits
    const gs1CompanyPrefix = gtin.substring(1, 8);

    // Extract GS1 ID: take the first digit and the next 5 digits, excluding the last one
    const gs1ID = gtin.charAt(0) + gtin.substring(8, 13);

    return {
        gs1CompanyPrefix: gs1CompanyPrefix,
        gs1ID: gs1ID
    };
}

NOTES:

We have assumed the character length for GTIN4, GS1 Company Prefix and GS1 ID as follows:

• GTIN4: 14 digits (eg: 00304091610507)
• GS1 Company prefix: 7 digits (eg: 0304091)
• GS1 ID: 6 digits (eg: 061050)