The person responsible of a cost center is accountable for the elements allocated in the cost center
The companies using SRM7 for purchasing should have a SRM7 user ID (=BIP user ID) entered in this field, starting with 5, such as 50000000
In the frame of Po2, there are now 2 financial matrix with SRM7 user ID.
There can be 2 position codes for the same position but one for ECO and one for SCO (ex: 50081224 - Chief Financial Officer & 50000102 - Chief Financial Officer, the first one is used when a company is in the scope SCO, the second one in ECO)
When creating a new cost center, you need to select the correct code using the following matrices 
. If the cost center is created in a company ECO, use a SRM7 position ECO and vice versa.
=> You can filter by GBU/Function, name or position to find the code to be used.
Find out more about SRM7
List of company codes with the scope
If in doubt about the scope of the company, you can look at the GAR List of companies.
The company's scope can be found in the properties of the company.