Add Prefix to Customer Number (Customer ID)?

Hi @pudpud

Unfortunately, WooCommerce does not have this feature built-in. However, you can achieve this by using a custom code.

Although writing or providing custom code is not within the scope of our support policy, Here’s a basic example of how you could add a prefix:

add_filter( 'woocommerce_new_customer_data', 'custom_customer_id', 10, 1 );
function custom_customer_id( $new_customer_data ){
$prefix = 'WP'; //replace with your preferred prefix
$new_customer_data['ID'] = $prefix . $new_customer_data['ID'];
return $new_customer_data;
}

If you are still having problems, we recommend asking development questions on the #developers channel of the WooCommerce Community Slack. Many of our developers hang out there and will be able to offer insights into your question. You can also seek help from the following:

• A local web developer
• Codeable.io
• WooExperts

I wish I could help more, but hopefully, this gets you going in the right direction to get the job done.

Apologies for the delay in replying to you, and thanks for getting back to me.

I tried that by adding code as a snippet but it then caused an error whenever I tried to create any new user – I kept getting the error message Error Invalid ID.

Thanks for trying anyway, and hopefully it works for someone else ??

Hi @pudpud

The code I shared was just an example. However, the “Invalid ID” error message you’re seeing could be because WordPress expects the ID to be a numeric value, and the prefix you’re adding is causing it to be interpreted as a string.

A workaround could be to change the ID generation logic in your system to start from a higher number for new accounts on your WordPress/WooCommerce site. For example, you could start from 20000 or 30000, depending on how many customers you have in your old system. This way, you can avoid overlapping with the old IDs without adding a prefix.

If you’re not comfortable making these changes yourself, I recommend seeking assistance from a local web developer, Codeable.io, or WooExperts. They are more than capable of helping you with this task.

I hope this helps! If you have any other questions, feel free to ask.

Thanks for your help. I think it is going to be a lot of hassle (and way over my head) to try and change so I will try to remember just to add the letters BU before all the accounts instead. Cheers anyway for trying

Hi (@pudpud,

Glad to hear it – thanks for letting us know!

I’ll mark this thread as resolved now. If you have any further questions, I recommend creating a new thread.

Cheers.