As may be authorized by the banks for cooperatives' or agricultural credit banks boards of directors ownership investment may be made in foreign business entities solely for the purpose of obtaining credit information and other services needed to facilitate transactions which may be financed under section 3.7(b) of the Farm Credit Act Amendments of 1980. Such an investment shall not exceed the level required to access credit and other services of the entity and shall not be made for earnings purposes. The business entity shall be deemed to be principally engaged in providing credit information to and performing such servicing functions for its members where such activities constitute a materially important line of business to its members. Also, investments must be made by a bank for cooperatives or agricultural credit bank for its own account and not on behalf of its members. The bank for cooperatives or agricultural credit bank shall use only those services provided by the business entity as necessary to facilitate transactions authorized by section 3.7(b) of the Farm Credit Act Amendments of 1980.