I can help you with what i have learned - but its a FWIW. The OBV is a "buying" indicator and the accumulation is a "holding' indicator so to speak. IF thye match up- thats so much the better.
If I see one whose OBV and volume are UP but th accumulation is down - I pass. What it can mean is that there is selling of new shares into the rally and of course the PPS does not rise commensurate with the buying volume. i like to watch the CCI and the CMF both going up together- one giving agreement to the other. accumulation -IMO- is one of the most important things to watch - IF its going up nicley it signals peeps are holding and due to confidence and it typically means bullish sentiment and a rise in the pps. I hope that helps.