BAPI error: X is not allowed for LOGIC_SWITCH-PRICING

Hi,

   BAPI 'BAPI_SALESORDER_CHANGE' is giving an error when trying to 're-determine the sales order item price' by passing 'logic_switch-pricing = 'X''. After gone though different OSS notes '574088, 593246, 449068, 403065, 410907 and 375016', found that it works for only B / C / G / space pricing types. Found that its working fine using VA05 and /AFS/MDC tcodes.

   Could any one know how to re-determine sales order price for pricing type X. any other options.

Thanks inadvance,

Satya