Identifiers are used to further distinguish one invoice from another when they might be identical otherwise.  For Example, utility invoices with different account #s, or invoices with the same account numbers but coded to different jobs, etc. 

To select an Identifier for THIS invoice, click the pink box and drag it to the information you want to use as the identifier. 
The white squares around the pink box can be used to resize the box to fit the identifier you want to use. 
Select the "Read the text" option that best suits your identifier. 
Verify your selection by referring to the Result. 
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