SAP的凭证日期和记账日期是不是就像传统凭证下的原始凭证日期和记账凭证日期？

01:document date=凭证日期posting date=记帐日期take invoice for exampleyour surplier made an invoice on Jan 19 2008, and u company received it on Feb 14 2008,if you posted the invoice on Feb 14 2008:document date is Jan 19 2008posting date is Feb 14 2008if you posted the invoice on Feb 28 2008:document date is Jan 19 2008posting date is Feb 28 200802:about the relationship between them, it is obvious in my opinion while u get the basic accounting knowledgesorry,it is difficult for me to explain it although it is obvious

就按填制日期填写，集中做分录注意凭证编号的次序，合符常理，收款在先，付款在后，进货在先，销售在后。。。。。

DocDate一般用原始凭证上的日期，比如发票日期，PostingDate是用来判断Peirod的，两者好像没有特定关系