topic ERROR 000278: Field mapping error: merge rule not valid for output field OBJECTID in ArcGIS API for Python Questions https://community.esri.com/t5/arcgis-api-for-python-questions/error-000278-field-mapping-error-merge-rule-not/m-p/792139#M1616 <HTML><HEAD></HEAD><BODY><P>Hi folks,</P><P>I have a Python script that is looping through all the fields in our parcel layer and adding them to a field map object.&nbsp; Afterwards, I am adding the field map object to the field mappings.&nbsp; I recently learned that you cannot add the "Shape" field so I had to write a conditional for that.&nbsp; However, I am running into another problem.&nbsp; It seems like the field OBJECTID cannot be merged.&nbsp; Not sure why.&nbsp; I have tried removing it without success.&nbsp; I also tried removing it and recreating it without any success.&nbsp; Anyone else experience this issue?</P><P></P><P>Python 2.7.16</P></BODY></HTML> Wed, 24 Jun 2020 16:16:27 GMT JimLugosi 2020-06-24T16:16:27Z ERROR 000278: Field mapping error: merge rule not valid for output field OBJECTID https://community.esri.com/t5/arcgis-api-for-python-questions/error-000278-field-mapping-error-merge-rule-not/m-p/792139#M1616 <HTML><HEAD></HEAD><BODY><P>Hi folks,</P><P>I have a Python script that is looping through all the fields in our parcel layer and adding them to a field map object.&nbsp; Afterwards, I am adding the field map object to the field mappings.&nbsp; I recently learned that you cannot add the "Shape" field so I had to write a conditional for that.&nbsp; However, I am running into another problem.&nbsp; It seems like the field OBJECTID cannot be merged.&nbsp; Not sure why.&nbsp; I have tried removing it without success.&nbsp; I also tried removing it and recreating it without any success.&nbsp; Anyone else experience this issue?</P><P></P><P>Python 2.7.16</P></BODY></HTML> Wed, 24 Jun 2020 16:16:27 GMT https://community.esri.com/t5/arcgis-api-for-python-questions/error-000278-field-mapping-error-merge-rule-not/m-p/792139#M1616 JimLugosi 2020-06-24T16:16:27Z