FBDI Purchase Order

Hello All,

We have loaded migrated purchase orders through FBDI and some of the orders ended up in error "The transaction account definition couldn't derive a valid account" with accrual and variance account error summary. However, when i try to create the purchase order manually with the same COA thats used on FBDI, it was successfully saved. Can someone help me to understand what could be missing when am doing through FBDI? Any help is much appreciated. Thank you.

ERROR CODE: PO_ACCT_GEN_WF_FAILED

ERROR SUMMARY: ACCRUAL_ACCOUNT_ID/VARIANCE ACCOUNT ID