Input Source "Cost Element Code" Unavailable in Receipt Accounting

We have implemented Landed Cost Management and the requirement is to derive Natural Account for "Landed Cost Clearing" accounting line based on "Landed Cost Charge Names". These charge names are nothing but the Cost Elements and therefore, we wanted to make use of "Cost Element Code" input source. But this input source is not available in Receipt Accounting. This is however available in Cost Accounitng.
Can somebody please suggest any workaround to fulfil this requirement?

Thanks,
Saahil