Byat Za was again called into action in 1408 when Razadarit decided to break the treaty. In March of that year,(Yazawin Thit Vol. 1 2012: 228, 235): Late Tagu 769 ME = 25 February 1408 to 24 March 1408 Razadarit sent in a force to dislodge Anawrahta, the Ava installed king from Arakan. Ava had been steadily acquiring its neighboring states since 1404 and Razadarit felt that he could not get Ava to get too strong. Byat Za was not part of the Arakan invasion force; he led the defensive operations at home against the certain Ava reprisal.Pan Hla 2005: 244 In one rare disagreement between Byat Za and Dein, the two men disagreed about the defensive plans. The king chose Dein's more conservative formation over Byat Za's, and appointed Dein as co-commander.Pan Hla 2005: 248–249
