import json
from datetime import datetime

async def main(request, params_kw):
    """Update a supplychain_accounting record."""
    user_id = await get_user()
    dbname = get_module_dbname('supplychain')
    
    data = params_kw.get("data", "{}")
    if isinstance(data, str):
        data = json.loads(data)
    
    record_id = data.get("id")
    if not record_id:
        return json.dumps({"status": "error", "message": "Missing record id"})
    
    data["updated_at"] = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
    
    # Remove fields that should not be updated
    for key in ["id", "resellerid", "created_by", "created_at"]:
        data.pop(key, None)
    
    config = getConfig(".")
    DBPools(config.databases)
    async with db.sqlorContext(dbname) as sor:
        await sor.U("supplychain_accounting", data)
        return json.dumps({"status": "ok", "data": data})