title .ERRB ms.date 12/17/2019 f1_keywords .ERRB helpviewer_keywords .ERRB directive ms.assetid d7834c95-c5b8-45d9-9224-692c2d7bff17 .ERRB Generates an error if textitem is blank. Syntax .ERRB textitem ⟦, message⟧ See also Directives Reference MASM BNF Grammar