How to solve the ELSER Generation Sequence Error?

This is an Example problem, I liked to rerun this input file, But it shows an error. I have mentioned the error for your reference and also program was given below.

 

AbaqusException: There are fewer than 2 items on a data line for which a generation sequence (start id, end id, optional increment number) is expected.  The keyword in question is related to *ELSET.  Please check input data.There are fewer than 2 items on a data line for which a generation sequence (start id, end id, optional increment number) is expected.  The keyword in question is related to *ELSET.  Please check input data. This occurred while parsing the input file. Run the input file through the batch pre-processor to check for syntax errors.

 

*ELEMENT, TYPE=CPE4R, ELSET=BLANK

*NSET, NSET=CENTER

1,102,203,304,405

*NSET, NSET=MIDLEFT

203,

*ELSET, ELSET=BLANK_B, GEN

1,100,1

*ELSET, ELSET=BLANK_T, GEN

301,400,1

*ORIENTATION, NAME=LOCAL

1.,0.,0., 0.,1.,0.

1, 0

*SOLID SECTION, MATERIAL=STEEL, ORIENTATION=LOCAL,

ELSET=BLANK, CONTROL=EC-1

*SECTION CONTROLS, NAME=EC-1, HOURGLASS=ENHANCED

*MATERIAL, NAME=STEEL

*ELASTIC

2.1E11,0.3

*PLASTIC

400.E6, 0.0E-2

420.E6, 2.0E-2

500.E6,20.0E-2

600.E6,50.0E-2

*NODE, NSET=REFPUNCH

7000, 0.000, 0.06

*NODE, NSET=REFHOLD

8000, 0.1,0.06

*NODE, NSET=REFDIE

9000,0.1,-0.06

*NSET, NSET=NOUT

REFDIE, REFHOLD, REFPUNCH