000813 : The value is not a valid field map.

Description

The parameter value used is not a field map. A field map provides a field definition and a list of input fields from a set of tables or feature classes that provide its values.

Solution

Update the field map parameter value. When entering the field map value as text, the syntax must be valid: "fldName newFldName visible;fldName1 newFldName1 visible1;…;fldName_N newFldName_N visible_N". Refer to Mapping fields to learn more about field mapping in scripts.