Clients that implement Business Central, often experience a gen. posting type issue when posting transactions through documents – purchase/sale or through journals. BC users may interpret this error in various ways and the easiest way to resolve this would be to define a “Gen. Posting Type” against the G/L account card.

What causes a gen. posting type issue?

It is important to understand what is causing the issue to determine the right resolution and prevent this error from occurring.

When users setup a new G/L account, the Gen. Posting Type field should be filled in only for revenue and expense accounts where GST is involved. If the transaction will impact your BAS (GST Reporting) then this field must be populated with either Purchase or Sale. If not, then it must be blank.

The Posting Groups consist of Gen. Posting Type, Gen. Bus. Posting Group, Gen. Prod. Posting Group, GST Bus. Posting Group and GST Prod. Posting Group. If the Gen. Posting Type field is defined, then we need to define the Posting Groups to correctly calculate the GST and post correct transactions to general and sub-ledger entries. If the transactions do not involve any GST, then the Gen. Posting Type and Posting Groups must be “blank”.

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