Meaning of each BDC_OKCODE

Hi...Guru...

I'm doing data conversion using BDC. However, I have question about meaning of each BDC_OKCODE. Anyone has a list of meaning of BDC_OKCODE for example, \00, =TSMAIN, = TSLINKS, etc., please send me to email a.trongsittirak@gmail.com. Reward is available for your kindness. Thank you very much.

Cheers,