Exception in Substep End Routine during DTP

Hi everyone,

While I try to execute DTP to transfer data from InfoCube to InfoCube (0PA_C01 -> 0TMC_C02), I got below error. I have looked on SAP Note 1776820 which it's quite similar but I'm on SAP BW 7.31 SP 10 and BI_Cont 7.47 SP 8.  I have loaded data into 0PA_C01 successfully but this problem appear when I loaded data into 0TMC_C02. Any ideas how to get rid of this?

Note: I haven't changed source code in End Routine; everything was standard code and no error found when I checked the code.

Please advice!!

Regards,

Daro