This blog will explain the purpose of the General Ledger Parameter ‘Values used for summary account’
You can choose 2 values here, either ‘Source document’ or ‘Accounting distribution’
The purpose of this parameter very shortly is that it governs which dimension should be used on a summary account. If you select ‘Source document’, the dimension specified on the Master record, eg. Vendor will be applied to the summary account upon posting. If you select ‘Accounting distribution’, the dimension specified on the lines, eg. Purchase Order lines will be applied to the summary account upon posting
Example
The parameter value is set to Source document
On the Vendor Master we have set the Financial dimension for Business unit equal to ‘001’
Proceed to make a Purchase Order and on the lines, specify a different Business unit dimension, here ‘005’
Upon invoicing the voucher looks like this. Note the dimension for the Vendor balance account is ‘001’, the same as on the Vendor master record
Now, let’s change the parameter to ‘Accounting distribution’ and repeat the Purchase Order posting
The voucher looks like this. Note the Business unit dimension is ‘005’, the same as specified on the Purchase Order line
In summary
If you select the value ‘Source document’ in the parameter, the summary account posting will always take the dimension from the Vendor Master
If you select the value ‘Accounting distribution in the parameter, the summary account posting will always take the dimension from the Purchase order lines