Append and Merge tools issues in Arc 10. keep getting error 000278 - failed on input OID ...... (could not write value to one field or the other). Does anyone know how to fix this? Never had this problem in Arc 9.3, where if the value did not fit, it would get chopped off.
I had a similar problem. the field length of the target feature class was too little. I created a new feature class in arccatalog with a greater field length and then load data into it. you get the same result as with merge and append, but in a new feature class.