Issue in Creating New Trial Account

Can you try all lowercase characters in the subdomain??

Yes using lower case characters trial account is get created.
In POS new invoice is created for item ball valve even though stock is not available and allow negative is also not marked.
For stock reports
todays stock postion
stock position as on
is missing.

How to create branch enabled company?
How to restrict financial posting for certain branch.
how to assign default account for point of sale
is there any accounting and bussiness rule

@mangeshvarhatkar You will get answers to most in the forum: http://manual.erpnext.com/