Modify the parameter attributes of BOR method
We have copied standard BOR object BUS2017 to ZBUS2017 and added a new method. This was done in 4.6C. Now we have upgraded the system from 4.6C to ECC 6.0. We got requirement to change one of the field structure of BAPI to another structure. When we did the change in Function Module ( BAPI ) it is activated but giving a syntax warning message like "the parameter has difference structure". For this we need to change the BOR method parameter definition to refer the same structure. But in ECC 6.0 the system is not allowing me to change the modification of the reference structure. This field is in display mode even if I go to change mode. May be this is the issue with the version. This may be since I am changing a method parameter definition which was done in 4.6C
Please advise me how to modify the method parameter to refer to new structure.