While defining the initial state field in Abaqus/Explicit in multistep analysis, in which the model consists of tetrahedron elements, the following error arises. Althouth the same mesh has been used in first (earlier) step, no error has occured.

Error:
The volume of 2 elements is zero, small, or negative. Check coordinates or node numbering, or modify the mesh seed. In the case of a tetrahedron this error may indicate that all nodes are located very nearly in a plane. The elements have been identified in element set ErrElemVolSmallNegZero.

Analysis Input File Processor exited with an error.