# Scopes and Fields
Using the Aggregation Function, the requests will be grouped by time and **Group Key(s)** in each scope.

### SCOPE `All`

| Name | Remarks | Group Key | Type | 
|---|---|---|---|
| name  | The service name of each request.  |   | string |
| serviceInstanceName  | The name of the service instance ID.  |   | string |
| endpoint  | The endpoint path of each request.  |   | string |
| latency  | The time taken by each request. |   |  int(in ms)  |
| status  | The success or failure of the request.  |   | bool(true for success)  |
| responseCode | The response code of the HTTP response, and if this request is the HTTP call. E.g. 200, 404, 302| | int |
| type | The type of each request, such as Database, HTTP, RPC, or gRPC. | | enum |
| tags | The labels of each request. Each value is made up by `TagKey:TagValue` in the segment. | | `List<String>` |

### SCOPE `Service`

This calculates the metrics data from each request of the service. 

| Name | Remarks | Group Key | Type | 
|---|---|---|---|
| name | The name of the service. | | string |
| nodeType | The kind of node to which the Service or Network address belongs, such as Normal, Database, MQ, or Cache. | | enum |
| serviceInstanceName | The name of the service instance ID. | | string |
| endpointName | The name of the endpoint, such as a full path of HTTP URI. | | string |
| latency | The time taken by each request. | | int |
| status | Indicates the success or failure of the request. | | bool(true for success)  |
| responseCode | The response code of the HTTP response, if this request is an HTTP call. | | int|
| type | The type of each request. Such as: Database, HTTP, RPC, gRPC. | | enum |
| tags | The labels of each request. Each value is made up by `TagKey:TagValue` in the segment. | | `List<String>` |
| sideCar.internalErrorCode | The sidecar/gateway proxy internal error code. The value is based on the implementation. | | string|
| tcpInfo.receivedBytes | The received bytes of the TCP traffic, if this request is a TCP call. | | long |
| tcpInfo.sentBytes | The sent bytes of the TCP traffic, if this request is a TCP call. | | long |

### SCOPE `ServiceInstance`

This calculates the metrics data from each request of the service instance. 

| Name | Remarks | Group Key | Type | 
|---|---|---|---|
| name |  The name of the service instance, such as `ip:port@Service Name`.  **Note**: Currently, the native agent uses `uuid@ipv4` as the instance name, which does not assist in setting up a filter in aggregation. | | string|
| serviceName | The name of the service. | | string |
| nodeType | The kind of node to which the Service or Network address belongs, such as Normal, Database, MQ, or Cache. | | enum |
| endpointName | The name of the endpoint, such as a full path of the HTTP URI. | | string|
| latency | The time taken by each request. | | int |
| status | Indicates the success or failure of the request. | | bool(true for success) |
| responseCode | The response code of HTTP response, if this request is an HTTP call. | | int |
| type | The type of each request, such as Database, HTTP, RPC, or gRPC. | | enum |
| tags | The labels of each request. Each value is made up by `TagKey:TagValue` in the segment. | | `List<String>` |
| sideCar.internalErrorCode | The sidecar/gateway proxy internal error code. The value is based on the implementation. | | string|
| tcpInfo.receivedBytes | The received bytes of the TCP traffic, if this request is a TCP call. | | long |
| tcpInfo.sentBytes | The sent bytes of the TCP traffic, if this request is a TCP call. | | long |

### SCOPE `Endpoint`

This calculates the metrics data from each request of the endpoint in the service. 

| Name | Remarks | Group Key | Type | 
|---|---|---|---|
| name | The name of the endpoint, such as a full path of the HTTP URI. | | string |
| serviceName | The name of the service. | | string |
| serviceNodeType | The type of node to which the Service or Network address belongs, such as Normal, Database, MQ, or Cache. | | enum |
| serviceInstanceName | The name of the service instance ID. | | string |
| latency | The time taken by each request. | | int |
| status | Indicates the success or failure of the request.| | bool(true for success) |
| responseCode | The response code of HTTP response, if this request is an HTTP call. | | int |
| type | The type of each request, such as Database, HTTP, RPC, or gRPC. | | enum |
| tags | The labels of each request. Each value is made up by `TagKey:TagValue` in the segment. | | `List<String>` |
| sideCar.internalErrorCode | The sidecar/gateway proxy internal error code. The value is based on the implementation. | | string|
| tcpInfo.receivedBytes | The received bytes of the TCP traffic, if this request is a TCP call. | | long |
| tcpInfo.sentBytes | The sent bytes of the TCP traffic, if this request is a TCP call. | | long |

### SCOPE `ServiceRelation`

This calculates the metrics data from each request between services.

| Name | Remarks | Group Key | Type | 
|---|---|---|---|
| sourceServiceName | The name of the source service. | | string |
| sourceServiceNodeType | The type of node to which the Service or Network address belongs, such as Normal, Database, MQ, or Cache. | | enum |
| sourceServiceInstanceName | The name of the source service instance. | | string |
| destServiceName | The name of the destination service. | | string |
| destServiceNodeType | The type of node of to which the Service or Network address belongs. | | enum |
| destServiceInstanceName | The name of the destination service instance.| | string|
| endpoint | The endpoint used in this call. | | string
| componentId | The ID of component used in this call. | yes | string
| latency | The time taken by each request. | | int |
| status | Indicates the success or failure of the request.| | bool(true for success) |
| responseCode | The response code of HTTP response, if this request is an HTTP call. | | int |
| type | The type of each request, such as Database, HTTP, RPC, or gRPC. | | enum |
| detectPoint | Where the relation is detected. The value may be client, server, or proxy. | yes | enum|
| tlsMode | The TLS mode between source and destination services, such as `service_relation_mtls_cpm = from(ServiceRelation.*).filter(tlsMode == "mTLS").cpm()` || string|
| sideCar.internalErrorCode | The sidecar/gateway proxy internal error code. The value is based on the implementation. | | string|
| tcpInfo.receivedBytes | The received bytes of the TCP traffic, if this request is a TCP call. | | long |
| tcpInfo.sentBytes | The sent bytes of the TCP traffic, if this request is a TCP call. | | long |

### SCOPE `ServiceInstanceRelation`

This calculates the metrics data from each request between service instances.

| Name | Remarks | Group Key | Type | 
|---|---|---|---|
| sourceServiceName | The name of the source service. | | string |
| sourceServiceNodeType | The type of node to which the Service or Network address belongs, such as Normal, Database, MQ, or Cache. | | enum |
| sourceServiceInstanceName | The name of the source service instance. | | string |
| destServiceName | The name of the destination service. | | |
| destServiceNodeType | The type of node to which the Service or Network address belongs, such as Normal, Database, MQ, or Cache. | | string |
| destServiceInstanceName | The name of the destination service instance. | | string |
| endpoint | The endpoint used in this call. | | string
| componentId | The ID of the component used in this call. | yes | string
| latency | The time taken by each request. | | int |
| status | Indicates the success or failure of the request.| | bool(true for success) |
| responseCode | The response code of the HTTP response, if this request is an HTTP call. | | int |
| type | The type of each request, such as Database, HTTP, RPC, or gRPC. | | enum |
| detectPoint | Where the relation is detected. The value may be client, server, or proxy. | yes | enum|
| tlsMode | The TLS mode between source and destination service instances, such as `service_instance_relation_mtls_cpm = from(ServiceInstanceRelation.*).filter(tlsMode == "mTLS").cpm()` || string|
| sideCar.internalErrorCode | The sidecar/gateway proxy internal error code. The value is based on the implementation. | | string|
| tcpInfo.receivedBytes | The received bytes of the TCP traffic, if this request is a TCP call. | | long |
| tcpInfo.sentBytes | The sent bytes of the TCP traffic, if this request is a TCP call. | | long |

### SCOPE `EndpointRelation`

This calculates the metrics data of the dependency between endpoints. 
This relation is hard to detect, and it depends on the tracing library to propagate the previous endpoint. 
Therefore, the `EndpointRelation` scope aggregation comes into effect only in services under tracing by SkyWalking native agents, 
including auto instrument agents (like Java and .NET), OpenCensus SkyWalking exporter implementation, or other tracing context propagation in SkyWalking specification.

| Name | Remarks | Group Key | Type | 
|---|---|---|---|
| endpoint | The parent endpoint in the dependency.| | string|
| serviceName | The name of the service. | | string |
| serviceNodeType | The type of node to which the Service or Network address belongs, such as Normal, Database, MQ, or Cache. | | enum |
| childEndpoint| The endpoint used by the parent endpoint in row(1). | | string |
| childServiceName | The endpoint used by the parent service in row(1). | | string |
| childServiceNodeType | The type of node to which the Service or Network address belongs, such as Normal, Database, MQ, or Cache. | | string |
| childServiceInstanceName | The endpoint used by the parent service instance in row(1). | | string |
| rpcLatency | The latency of the RPC between the parent endpoint and childEndpoint, excluding the latency caused by the parent endpoint itself.
| componentId | The ID of the component used in this call. | yes | string
| status | Indicates the success or failure of the request.| | bool(true for success) |
| responseCode | The response code of the HTTP response, if this request is an HTTP call. | | int |
| type | The type of each request, such as Database, HTTP, RPC, or gRPC. | | enum |
| detectPoint | Indicates where the relation is detected. The value may be client, server, or proxy. | yes | enum|


### SCOPE `BrowserAppTraffic`

This calculates the metrics data from each request of the browser application (browser only).

| Name | Remarks | Group Key | Type | 
|---|---|---|---|
| name | The browser application name of each request. |  | string |
| count | The number of request, which is fixed at 1. |  | int |
| trafficCategory | The traffic category. The value may be NORMAL, FIRST_ERROR, or ERROR. | | enum |
| errorCategory | The error category. The value may be AJAX, RESOURCE, VUE, PROMISE, or UNKNOWN. | | enum |

### SCOPE `BrowserAppSingleVersionTraffic`

This calculates the metrics data from each request of a single version in the browser application (browser only).

| Name | Remarks | Group Key | Type | 
|---|---|---|---|
| name | The single version name of each request. |  | string |
| serviceName | The name of the browser application. | | string |
| count | The number of request, which is fixed at 1. |  | int |
| trafficCategory | The traffic category. The value may be NORMAL, FIRST_ERROR, or ERROR. | | enum |
| errorCategory | The error category. The value may be AJAX, RESOURCE, VUE, PROMISE, or UNKNOWN. | | enum |

### SCOPE `BrowserAppPageTraffic`

This calculates the metrics data from each request of the page in the browser application (browser only).

| Name | Remarks | Group Key | Type | 
|---|---|---|---|
| name | The page name of each request. |  | string |
| serviceName | The name of the browser application. | | string |
| count | The number of request, which is fixed at 1. |  | int |
| trafficCategory | The traffic category. The value may be NORMAL, FIRST_ERROR, or ERROR. | | enum |
| errorCategory | The error category. The value may be AJAX, RESOURCE, VUE, PROMISE, or UNKNOWN. | | enum |


### SCOPE `BrowserAppPagePerf`

This calculates the metrics data form each request of the page in the browser application (browser only).

| Name | Remarks | Group Key | Type | 
|---|---|---|---|
| name | The page name of each request. |  | string |
| serviceName | The name of the browser application. | | string |
| redirectTime | The time taken to redirect. |  | int(in ms) |
| dnsTime | The DNS query time. | | int(in ms) |
| ttfbTime | Time to first byte. | | int(in ms) |
| tcpTime | TCP connection time. | | int(in ms) |
| transTime | Content transfer time.  | | int(in ms) |
| domAnalysisTime | Dom parsing time. | | int(in ms) |
| fptTime | First paint time or blank screen time. | | int(in ms) |
| domReadyTime | Dom ready time. | | int(in ms) |
| loadPageTime | Page full load time. | | int(in ms) |
| resTime | Synchronous load resources in the page. | | int(in ms) |
| sslTime | Only valid for HTTPS. | | int(in ms) |
| ttlTime | Time to interact. | | int(in ms) |
| firstPackTime | First pack time. | | int(in ms) |
| fmpTime | First Meaningful Paint. | | int(in ms) |