FRM error in AR

[nankeen80]

Hi all,

We r using Oracle App Release 11i. We ve set up GL, AP and AR but having lots of FRM-40735 problem with AR. Some of the form is not accessible and giving NO DATA FOUND message, even have AR_POSTING_NOT_ALLOWED when try to save record.
1. Could it be because of the setting in AR is not setup properly?
2. Or is it somewhere else that is not setup properly (GL?)?
3. DO we need to setup the AR by order?
4. What r d most important form in AR?

Im very new in this and require a lot of help and guidance. Any reply will help. Thanks!!