can we make project expenditure type dependent on task number in requisition page

Organization Name (Required - If you are an Oracle Partner, please provide the organization you are logging the idea on behalf of):

Fidelity Information Services

Description (Required):

Need to make project expenditure type dependent on task number field under requisitions page so that we can differentiate the expenditure types based on Capex and Opex which helps to derive the account segment based on expenditure type

Use Case and Business Need (Required):

Use case: Need to control the expenditure type based on task numbers in requisitions page so that correct account is being derived for opex and capex task

Business Need: Currently we are deriving the natural account segment based on project expenditure type under requisitions page using a mapping set need to control the list of expenditure types based on task numbers so that capex and opex task are charged to relevant accounts