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Field Calculator error on ObjectID = 0, which doesn't exist(?)

Question asked by jpolo on Feb 9, 2016
Latest reply on Feb 9, 2016 by MidnightYell2003

I am adding a text/string field, "countyname", to a shapefile table. When I use Field Calculator to change the new fields to "Delaware", I get this error message

 

The calculated value is invalid for the row with ObjectID = 0. For example, the calculated value may be too large for the field or you may be trying to add a string to a number field. This row will not be updated. Do you want to process the rest of the rows?

 

It goes on with a warning about what happens if I say yes or no. I select Yes and the process fails. I don't know why this is happening or why it's referring to ObjectID = 0, when there is no such ObjectID. ObjectID starts with 1.

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