Transfer requirement not converted to Transfer order in Production Order

Hello,

I have 2 users with identical authorizations (checked through Tcode SUIM).

When the first user releases a production order, Transfer requirement is automatically converted toTransfer order & a picking list is printed.

Whereas when the second user releases a production order, Transfer requirement not converted to Transfer order. (Transfer requirement should be converted manually in Tcode LB10).

I have deleted & recreated again the same user, it doesn't still convert. But if I slightly change the user name with the same authorization the conversion becomes automatic.

Thanks for your help