Comma-separated list of layers to search, with layer names being case-insensitive.

• Both custom layers and Map Attribute core map layers are supported.
• Map Attribute layers categorized by functional class, like ROAD_GEOM_FC1 to FC5, can be selected by using FCN notation, e.g. ROAD_GEOM_FCN.
• The maximum length of a layer name and the permitted characters can be looked up in the service via /v8/maps/serviceconfiguration.
• Using the attributes parameter specific column attributes from a layer can be returned.

Spatial filtering for multi layer search. For GET requests supported filter type is point with radius.

• Example: in=point:41.93,12.43;r=40
• Multipoint search is supported only via POST request with filter type assetPositions

A SQL expression which is evaluated for each geometry returned from the specified layer list.

• Columns values for each geometry are available as predefined variables.
• When an expression is specified, only geometries where the expression evaluates to true are returned.
• Supported SQL filter operators include: =, !=, >, <, AND, OR and LIKE.
• Example: filter=RATING > 3 AND NAME != 'MyPlace23' AND NAME LIKE 'FOOD%'.
• Parameter value must be url encoded when using special characters.
• This filter applies to all geometries and may be slow for large layers. To avoid service overload, filter expressions should not exceed 100 characters.
• The filter is applied across all objects from specified layers, so it is most effective when a single layer is requested.

When set to 1, then meta info is returned in the response.

A Semicolon-separated list of column names (in uppercase) to indicate which attributes will be included in the results.

• If the request specifies several layers, then pass attributes for each layer as a comma separated list.
• Default includes all columns from each layer.
• Example if &layers=LINK_ATTRIBUTE2_FCn,LINK_ATTRIBUTE_FCn,ROAD_GEOM_FCn are requested, then the columns can be restricted to only following &attributes=PARKING_LOT_ROAD;CARPOOL_ROAD,PAVED;PRIVATE,BRIDGE;TUNNEL.* PARKING_LOT_ROAD and CARPOOL_ROAD are from layer LINK_ATTRIBUTE2_FCn, PAVED and PRIVATE from LINK_ATTRIBUTE_FCn, BRIDGE and TUNNEL from ROAD_GEOM_FCn layer.

Optional. Map in which the specific layer or layers exist, which will be accessed to retrieve the layer content. If parameter is not specified, the behavior is: search in the default map where all custom layers are stored, which were created without mapName in upload/modify request.

Optional. Identifier for the asset. If provided, the response will contain the assetId.

• The maximum length of an asset id and the permitted characters can be looked up in the service via /v8/maps/serviceconfiguration.

Owner app_id that was used to upload a layer. It is mandatory when a granted app_id is used to access the layer.