Gracias Alessandro
Lo resolvi con este query.
IF @transaction_type IN (N'A', N'U') AND (@Object_type = N'1470000113')
BEGIN
If EXISTS (SELECT T.docentry FROM PRQ1 T WHERE T.docentry = @list_of_cols_val_tab_del and T.AcctCode is null)
Begin
SET @error = 14
SET @error_message = N'Por Favor Ingrese el No. de Cuenta'
End
END
Saludos