dosubot[bot] commented on issue #658:
URL:
https://github.com/apache/incubator-hugegraph-toolchain/issues/658#issuecomment-2727364050
<!-- Answer -->
The error message `com.papayadb.loader.exception.LoadException: The property
key 'target_name' doesn't exist` indicates that the property key `target_name`
is not defined in your schema. To resolve this, you need to ensure that all
property keys used in your `field_mapping` are defined in the `schema.groovy`
file.
Here's how you can define the missing property keys in your `schema.groovy`:
```groovy
schema.propertyKey("name").asText().ifNotExist().create();
schema.propertyKey("age").asInt().ifNotExist().create();
schema.propertyKey("city").asText().ifNotExist().create();
schema.propertyKey("source_name").asText().ifNotExist().create();
schema.propertyKey("target_name").asText().ifNotExist().create();
schema.propertyKey("date").asText().ifNotExist().create();
schema.propertyKey("weight").asDouble().ifNotExist().create();
```
Make sure to include all the property keys that are referenced in your
`field_mapping` and any other parts of your struct configuration. This should
resolve the `LoadException` by ensuring that all necessary property keys are
available in the schema
<sup>[[1]](https://github.com/apache/incubator-hugegraph-toolchain/blob/master/hugegraph-loader/src/test/resources/file_has_empty_line/schema.groovy)</sup><sup>[[2]](https://github.com/apache/incubator-hugegraph-toolchain/blob/master/hugegraph-loader/assembly/static/example/mysql/schema.groovy)</sup>.
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