BAPI to create SNP planned order based on start date

Hi,

I am looking for a BAPI to create SNP planned order based on the order start date. There is BAPI BAPI_MOSRVAPS_CREATESNPORDER which can be used to create SNP planned order based on the end date but not based on the start date.

Also would be great if some one can share how do they create SNP Planned orders using BAPI BAPI_MOSRVAPS_CREATESNPORDER in case if GR processing time is defined in the product master and workdays for GR to be respected according to the calendar.

Regards,

Venkat