前处理MPDATA中遇到warning，the material property temperature

各位高手好，
我的前处理命令流如下：
但是有warning如下图：

我想分析地震作用下结构时程响应，但是怎么提示我温度未设置，我感觉我的模型和温度没有什么关系啊！
以下是命令流
请大神分析一下，谢谢了！小弟不胜感激！
FINISH
/CLEAR
/UNITS,SI !Annotates the database with the system of units used.
!SI--International system (m, kg, s, K).
/PREP7
DAMPRATIO=0.02 !振型阻尼系数都为0.02
ET,1,BEAM188
KEYOPT,1,7,1
KEYOPT,1,8,1
ET,2,MASS21,,,4 !MASS21 is a point element having up to six degrees of freedom
!translations(平移） in the nodal x, y, and z directions and rotations
!about the nodal x, y, and z axes
MP,EX,1,210E9
MP,NUXY,1,0.3
MP,DENS,1,7800
MPDATA,DAMP,1,,DAMPRATIO
SECTYPE,3,BEAM,I
SECDATA,0.2,0.2,0.5,0.01,0.01,0.008
R,1,1.6E2,1.6E2R,2,1.2E2,1.2E2