# MAP_HDR: Field Mapper
- Name: `MAP_HDR`
- Catalog: `AccountView`
- Label: Field Mapper
- Partition-specific: false
- Select: true
- Insert: false
- Update: false
- Delete: false
## Table Columns
The columns of the table `MAP_HDR` are shown below. Each column has an SQL data type.
| Name | Data Type | Label | Required | Documentation |
|---|:---:|---|:---:|---|
| `CNG_DATE` | `datetime` | Date modified | ☐ | |
| `CNG_NR` | `int32` | Change number | ☐ | |
| `CNG_USR` | `string(20)` | Employee last modified | ☐ | |
| `DATA_TYPE` | `string(25)` | Source Data Type | ☐ | |
| `FILT_ARR` | `string(4)` | Selection row | ☐ | |
| `FILT_OR` | `int32` | Selection on one or all criteria | ☐ | |
| `INP_DATE` | `datetime` | Entry date | ☐ | |
| `INP_USR` | `string(20)` | Entered by employee | ☐ | |
| `MAP_FOR` | `string(80)` | Filter Expression | ☐ | |
| `MAP_GRP` | `string(10)` | Import definition code | ☐ | |
| `MAP_GRPBY` | `string(60)` | Group by Expression | ☐ | |
| `MAP_ID` | `string(10)` | Field Mapper ID | ☐ | |
| `MAP_PARAM` | `string(4)` | Mapping Parameters | ☐ | |
| `REC_BLK` | `boolean` | Blocked | ☐ | |
| `REC_CUST` | `boolean` | Bespoke | ☐ | |
| `REC_ORD` | `int32` | Table order | ☐ | |
| `SEL_DIST` | `boolean` | Unique values only | ☐ | |
| `SRC_BASE` | `string(30)` | Source Table | ☐ | |
| `SRC_DESC` | `string(40)` | Field Mapper Description | ☐ | |
| `SRC_FILE` | `string(60)` | Sample Data Table | ☐ | |
| `TGT_FILE` | `string(10)` | Target Table | ☐ | |