FormField.tsx

const innerFieldData = {
    id: props.selectedItem.id,
    ...values, // formik's form field values
};

const getFieldUniqueId = (data: any) => data.id;

<InnerField
    fieldData={innerFieldData}
    getFieldValue={(innerFieldData: any) => innerFieldData['itemDescription']}
    getFieldUniqueId={getFieldUniqueId}
>
    {({ handleChange: innerHandleChange, value }: any) => {
        return (
            <TextArea
                placeholder='DESCRIPTION'
                name="itemDescription"
                value={value}
                onBlur={(e: any) => {
                    handleBlur(e); // formik's handleBlur
                    handleChange(e); // formik's handleChange
                }}
                onChange={innerHandleChange}
            />
        )
    }}
</InnerField>