# \[#1297\] ECPay Taiwan Invoice System
**URL:** https://tech-support.simplybook.me/t/1297-ecpay-taiwan-invoice-system/1297
**Category:** Bug Reports
**Tags:** migrated, redmine-1297
**Created:** [October 29, 2024, 10:00am UTC](https://tech-support.simplybook.me/t/1297-ecpay-taiwan-invoice-system/1297 "2024-10-29T10:00:12Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@system](https://tech-support.simplybook.me/u/system)
#### Post date: [October 29, 2024, 10:00am UTC](https://tech-support.simplybook.me/t/1297-ecpay-taiwan-invoice-system/1297/1 "2024-10-29T10:00:12Z")
**Migrated from Redmine #1297** | _Author: Ben Tsai_
_Status: Feedback | Priority: High, I’m very impatient | Created: 2024-10-29_
* * *
I am a user from Taiwan
The system has a Taiwan invoice system connected to ECPay but does not have a field for Taiwan Unified Number.
How can I set this field in Simplebook so that ECPay can capture it?
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### Author:  [@system](https://tech-support.simplybook.me/u/system)
#### Post date: [October 29, 2024, 10:53am UTC](https://tech-support.simplybook.me/t/1297-ecpay-taiwan-invoice-system/1297/2 "2024-10-29T10:53:26Z")
**Dmytro Bondarev** wrote:
Hi,
in ecpay this field is set in CustomerIdentifier.
We don’t have such information for customer, so we set this as blank string.