How to import SSP from the contractually stated price in Enterprise Contracts

Summary

How to determine and allocate Transaction Price directly from Enterprise Contract amounts

Content

For construction industry clients, the SSP is typically the contractually stated price. This is entered on the contract when it is setup in Enterprise Contracts. How do the amounts entered on the contract integrate with RMCS to determine and allocate SSP?  

I can see that SSP is either automatically created (OSSP) or entered manually using a spreadsheet. Both these options do not seem suitable where prices are contract specific and likely to vary based on client variations. And I can also see from Idea 165E37C51A that Unit SSP on Contract Lines do not integrate from Enterprise Contracts to RMCS.