Inbound Interface for Rounding Profiles 
You use this interface to import rounding profiles. SAP F&R uses these in order quantity optimization to round to logistical units of measure.
Integration
You can also transfer the assignments of rounding profiles to supply relationships using this interface. You can also assign the rounding profile to a transportation lane interactively in SAP F&R in mass processing of transportation lanes for products.
Using the Business Add-In (/FRE/IF_CON_BADI_018), you can enrich and change the imported rounding profile data. For more information, see the Implementation Guide (IMG) for Forecasting and Replenishment under
Interfaces 
Enhancements Using Business Add-Ins BAdI: Rounding Profile Data Enrichment 
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Features
You use this interface to define, modify, and delete rounding profiles in SAP F&R. You can import the following information:
Zero rounding indicator
Unit of measure
Threshold value for rounding up and down
Activities
The integrated sending system starts the transfer and calls appropriate function module for the interface in SAP F&R. For more information, see the Overview of the Interfaces in SAP F&R.
You then post the data in SAP F&R.