New Fields in Customer Master

Hi All,

I have a requiremnet to add new fields in the customer master Under sales area,

1- Carrier

2- Carrier Act info

We require  the above fields need to be updated in the sales order Partner Tab as Carrier name as Name as shown in the Picture  Under the NAME

Next will be Carrier Acct Info Under the PARTNER at the time of Sales Order creation and should always have a Option to Override it.  How feasible is this? if so please share the detail step included in it.

Creating a Carrier with Account Group will not help me , since  Clinet do not want to have the carrier for every sales order.SAP system connected with many interfaces and EDI as well.

Any additional Questions Pls Ask.

Regards,

M