eBusiness Suite - PA, AP, OP and INV transactions custom classification

Hi,

I am pretty new with eBS and I'm extracting data with ODI for an integration with planning. The extracted data corresponds to all transactions related to a set of accounts from PA,AP,OP and INV modules and I need to classifiy those transactions on 3 categories: liabilities, expenses or disbursements (payments). I know that eBS doesnt have this categories, so I suppose I'll have to use different mappings, one for each module, but I need to know what column(s)/tables(s) should I use to do those mappings

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As an example, for GL Module I am mapping GL_JE_HEADERS.JE_CATEGORY with a custom table to get the above classification.