[TYPO3-commerce] No warning when buyproces halts because of email previously used

[Joerg Sprung]

Hi Stephan,

Stephan Viftrup wrote:
> As default that constant is set to "email,username". Do you suggest to 
> remove username?
> This works fine as it allows for creation of multible users with the 
> same email adress.

leave the TS-Variable as it is and modify the notice that the username 
is allready is in use for your wishes. (_LOCAL_LANG in TS)

> However this is not always desired. If instead of allowing a new user 
> entry with an already used email, i want to inform the user that he is 
> trying to buy with an already registred email. And that he may choose 
> to login (and not lose the content of his cart) or provide another 
> email.

Implement a FE-User login to your page an this should be successful. The 
content of basket won't lost when login.

regard

Jörg