How to MASS POST/UNPOST JOURNALS??

hi all

In BPC Web front end, in Journals, I've selected 9 Journals and click on "Post".

However, BPC throws an error message saying "post - Failed"

I checked and found the it posted 4 Journals (status is "Posted"), but the other 5 Journals is still in "Saved" status.

Same issue with Unpost.

That means I only can post 4 Journals at one time. I've hundred of Journals and it is taking me too much time.

Does anyone knows how to resolve this issue?