Picking in storage type that allow negative stock

Dear Gurus,

I'm looking for a way to pick up stock in storage type that allow negative stock with out creating negative stock 😊

Example :

Transfer request of 10 item of the material A

Stock :

2 items in storage type 001 -> No stock negative allowed

2 items in storage type 002 -> Stock negative allowed

6 items in storage type 003 -> No stock negative allowed

Search sequence 001, 002, 003

In the standard during the creation of the transfer order the system will create the transfer order :

2 items in 001 and 8 items in 002

I haven't find any clue in the customizing in order to force the picking of the quantity available only.

the second solution can be to implement user exit ;

MWMTO001

Enhancements for end of transfer order generation

MWMTO002

Enhancements at end of transfer order confirmation

EXIT_SAPLL03T_001

EXIT_SAPLL03T_002

What are your recommendation ?

Thanks.