我在ICEM里面画的6面体网格导入ABAQUS怎么老是出错？

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划好的六面体网格

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导入ABAQUS后总是显示：

“AbaqusException: in keyword *NODE, file "shisu88.inp", line 8: Node label is not a positive integer: 0
This occurred while while parsing the input file. Run the input file through the batch pre-processor to check for syntax errors.  
The model "shisu88" has been imported from an input file.
Please scroll up to check for error and warning messages.”