原文及翻译：

1) some steps no acc key and accrual key. does it mean no additional GL account is used？

1）有的科目中并无科目码和应记码，意味着没有总账科目被用到？

Yes, No separate G/L account needed for any value posting. In purchase order all respective condition types will appears but ALL VALUE will be appears as Purchase Order "NET PRICE" and later during goods receipt posting all the value will post to material inventory account .

是的，任何价值过账都不需要单独的总账科目。 在采购订单中，所有相应的条件类型都会出现，但所有金额将显示为采购订单“净价格”，稍后在收货过帐时，这些金额将过帐到物料库存帐户中。

2) some steps with both acc key and accrual key. system to pick which 1?

2）有的步骤同时用到了科目码和应记码，那系统改如何选择？

System picks accrual key where G/.L account posted with separate account entry and G/L account picks from OBYC t.code where accrual key assigned to G/L account

回答：系统会选择应计码，其中总账科目会通过单独的帐户过帐，总帐帐户从 OBYC中选择，其中应计码分配给科目码。

3) possible to have only acc key or only accrual key?

3）有没有可能，系统只选择科目码或者应记码？

accrual key

回答：二选一，那一定会选择应记码。

4) what is the difference of acc key and accrual key?

4）科目码和应记码有何不同？

Account key enables the system to post amounts to certain types of Revenue account and with the help of account key the system can post for accrual key with amounts to certain types of accruals accounts.

回答：科目码使系统可以将金额过帐到某些类型的收入帐户，并且在科目码的帮助下，系统可以将带有金额的应计码过帐到某些类型的应计帐户中