SAP note - 1945137

Hi ,

I'm have implemented note - 1945137.

while executing some t-code, we are getting dump.

this is due to class - CL_FIWTIN_ACCUMULATION and interface - IF_WT_ACC_UNIT_PRICE

Error: 'Field IS_BKPF-TCODE is unknown. It is neither in one of the specified tables nor defined in data.'

Please suggest.