> ## Documentation Index
> Fetch the complete documentation index at: https://docs.corrdata.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Data Import

> Import pipeline assets from ArcGIS Feature Services or Shapefiles

## Overview

CorrData supports importing GIS data from multiple sources:

* **ArcGIS Feature Services** - Connect directly to Esri services for live sync
* **Shapefiles** - Upload ZIP files containing shapefile data

## Import Wizard

The Import Wizard guides you through the process:

<Steps>
  <Step title="Select Source">
    Choose between ArcGIS Feature Service or Shapefile upload.
  </Step>

  <Step title="Connect or Upload">
    Enter the service URL and credentials, or upload your shapefile.
  </Step>

  <Step title="Configure Mapping">
    Map source fields to CorrData asset fields using auto-suggestions.
  </Step>

  <Step title="Set Options">
    Choose target asset type, conflict resolution, and sync schedule.
  </Step>

  <Step title="Import">
    Review and start the import process.
  </Step>
</Steps>

## ArcGIS Feature Service

### Supported Services

* ArcGIS Online hosted services
* ArcGIS Enterprise services
* Public ArcGIS services

### Authentication

CorrData supports API key authentication for ArcGIS services:

```json theme={null}
{
  "url": "https://services.arcgis.com/org/FeatureServer",
  "apiKey": "your-arcgis-api-key"
}
```

### Sync Schedules

| Schedule | Description                |
| -------- | -------------------------- |
| Manual   | Import only when triggered |
| Daily    | Sync once per day          |
| Weekly   | Sync once per week         |

## Shapefile Import

### Supported Formats

Upload a ZIP file containing:

* `.shp` - Shape file (required)
* `.dbf` - Attribute database (required)
* `.shx` - Shape index (required)
* `.prj` - Projection file (recommended)

### Coordinate Systems

CorrData automatically transforms coordinates to WGS84 (EPSG:4326). Supported source CRS:

* NAD83 (EPSG:4269)
* NAD27 (EPSG:4267)
* State Plane coordinate systems
* UTM zones

## Field Mapping

### Auto-Suggestions

CorrData uses fuzzy matching to suggest field mappings:

| Source Field | Suggested Target            | Confidence |
| ------------ | --------------------------- | ---------- |
| PIPE\_NAME   | name                        | 95%        |
| DIAMETER     | attributes.diameter\_inches | 80%        |
| MATERIAL     | attributes.material\_type   | 85%        |

### Templates

Pre-built templates for common schemas:

* **Pipeline Default** - Standard pipeline fields
* **Segment Default** - Segment-specific fields
* **Test Station Default** - Test station fields
* **Rectifier Default** - Rectifier fields

## Conflict Resolution

When importing records that may already exist:

| Option     | Behavior                             |
| ---------- | ------------------------------------ |
| Skip       | Don't import if external\_id exists  |
| Update     | Update existing record with new data |
| Create New | Always create a new record           |