Diferences between BAPIs for post of FI Documents

Hi,

Does anyone know the differences between BAPI_ACC_GL_POSTING_POST and BAPI_ACC_DOCUMENT_POST ?

I need to post some FI documents like manually in transaction FB01, and i found this 2 bapis. But now i don't know witch should i use to do it, or also if there are another one more convenient. I only know that we'll have interfaces with documents related with customers, vendors and also employers, but we won't have any information to load in SD, MM or HR modules.

Thanks,

Paulo Sousa