AS IS:
When a new customer/vendor (with an automatic number sequence) is generated, the party number and account number never match.

Example for 'Company A'
PARTY0001 - Company A (party)
ENT1CUST0001 -Company A (customer role in entity 1)
ENT2CUST0001 - Company A (customer role in entity 1)
ENT1VEND0001 - Company A (vendor role in entity 1)

Since this is all the same account (company A) it would be more logical that they all can have the same account number. A lot of times the user will remember the account number by head and will try to search for it in the system. A lot of users expect to have the same number for all accounts (but don't want to enter it manually when creating the accounts)

TO BE:
When creating accounts the account number an party number have to be synchronized.

Example for 'Company A'
ACCOUNT0001 - Company A (party)
ACCOUNT0001 -Company A (customer role in entity 1)
ACCOUNT0001 - Company A (customer role in entity 1)
ACCOUNT0001 - Company A (vendor role in entity 1)


We have had this question on almost every customer project so would be very nice standard functionality to have.

Vendor/customer role are unique so seems possible to do with those roles. For contacts (1toN) this is not possible and not needed.