Custom domain type incorrectly gives error when using macro syntax

[jsoneaday]

I have this domain type. My rust code uses macros and it gives error "returned from database: domain uint_256 does not allow null values". However I am not passing null values I am passing BigDecimal values as shown. Also this is my prepare call cargo sqlx prepare --database-url {{DATABASE_URL}} -- --all-targets

CREATE DOMAIN uint_256 AS NUMERIC NOT NULL
    CHECK (VALUE >= 0 AND VALUE < 2::numeric ^ 256)
    CHECK (SCALE(VALUE) = 0);

sqlx::query!(
            r#"
INSERT INTO
    eqx_transactions (
        id,
        user_id,
        fb_txn_id,
        tx_hash,
        tx_created,
        tx_last_updated,
        tx_type,
        tx_status,
        asset_code,
        amount,
        amount_decimals,
        fee_currency,
        network_fee,
        network_fee_decimals,
        service_fee,
        service_fee_decimals,
        to_address,
        to_tag_memo
    )
VALUES
    ($1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12,$13,$14,$15,$16,$17,$18)
RETURNING
    id
            "#,
            Uuid::new_v4(),
            eqx_tx_params.user_id,
            eqx_tx_params.fb_txn_id,
            eqx_tx_params.tx_hash,
            eqx_tx_params.tx_created,
            eqx_tx_params.tx_last_updated,
            eqx_tx_params.tx_type,
            eqx_tx_params.tx_status,
            eqx_tx_params.asset_code,
            BigDecimal::from_bigint(amount, 0),
            amount_decimals as i16,
            eqx_tx_params.fee_currency,
            BigDecimal::from_bigint(network_fee, 0),
            network_fee_decimals as i16,
            BigDecimal::from_bigint(service_fee, 0),
            service_fee_decimals as i16,
            eqx_tx_params.to_address,
            eqx_tx_params.to_tag_memo,
        )
        .fetch_one(&mut **self.0.lock().await)
        .await
        .report_as()?;