params_required() {
    local param_name="$1"
    local param_value="$2"
    local error_message="$3"

    if [ -z "$error_message" ]; then
        error_message="Parameter '$param_name' is required but not provided."
    fi

    if [ -z "$param_value" ]; then
        echo "$error_message" >&2
        exit 1
    fi
}