The problem is because someone send an ANRPE:RC=XX;
So, who the hell knows which RC? (maybe you can search with alogfind, but what if no log available?).
Solution:
Continue with any definition:
ANRSI:P01=1, R=xxxx, SP=MM1, BNT=1;
ANRPE;
Then, you can find the RC=XX just looking at ANRSP:RC=ALL, NOP;
Done.