AutoInvoice exceptions in r12 for RMA Orders only

Hello,

We are getting following error in processing Credit Memos through AutoInvoice.

Errors:   1) Others exception occured in Tax Accounting routine during Adjustment/Application Accounting. Please contact oracle

               support. (22520461)

This is what we see

1. For e.g. RMA Order 12345 got stuck in interface table with tax error.

2. More and more orders started erroring out with the same error.

3. I discovered that if you process the orders in smaller batches they will process.

4. If an order with the error is included in the batch, others orders will be marked with the same error.

5. We were able to process 99% of the orders flowing this approach witout changing anything. The orders did not have any error, they were only incorrectly marked with the error.