Add to grid only one row

Hii, ​@bihalivan15,

Acumatica has no grid property that limits a grid to one row. You limit it in the graph code, at two levels:

1. UI level: in the RowSelected event of the header (parent) DAC, set AllowInsert = false on the detail view. Do this when the condition is true and one row already exists. The grid’s Add Row (+) button is then disabled.
2. Server level: in the RowInserting event of the detail DAC, cancel the insert and show an error if a row already exists. This also stops extra rows coming from the Web API, Import Scenarios, Copy/Paste, or code.