help to Show VTA Number of Customer

[Stefke1974]

Hi,

 

I would like to add a field VTA to the customer info.

 

For example, Customer is a company, with VTA number.

 

So, customer enter he's VTA number at registration or in profile.

 

Then, also, when customer buy a product, he's VTA number must be on invoice.

 

Is this possible? I don't find any info on this.

 

Thanks.