ApsaraMQ for RocketMQ 4.x Standard Edition bills are itemized by topic. Use the Bill Details page to:
Check daily fees and usage per topic
Export hourly usage breakdowns per topic
Understand why API call counts differ between bills and the dashboard
Prerequisites
Before you begin, make sure that you have:
An ApsaraMQ for RocketMQ 4.x Standard Edition instance
Access to the Bill Details page in the Alibaba Cloud console
View daily fees and usage per topic
On the Bill Details page, select the target month and product, then set the following filters:
Statistics Item: Billing Item
Statistical Period: Day

The results are grouped by topic. The following table describes each column. Usage values by billing item:
Topic resource usage: Always
1. Resource usage is counted once per topic per day.API calls: The total number of messages sent and received by the topic per day. This value reflects the billed count, not the raw message count. See How billed API calls are calculated.
Data transfer cost: The outbound Internet traffic generated by the topic per day.
Column Description Instance ID Billing details grouped by topic. Format: <ApsaraMQ for RocketMQ instance ID;Topic name>Billing Item The charge category: Topic resource usage, API calls, or Data transfer cost Usage Depends on the billing item. See the following breakdown. List price The total fee based on the list price
View hourly usage per topic
On the Bill Details page, click View Usage Details.
On the View Usage Details page, set the following filters:
Filter Value Period Select the time range Product Name Message Queue RocketMQ 4.0 Standard Edition Instance Billing Item Name Topic Occupancy Metering Specification Cloud Message Queue RocketMQ 4.0 Standard Edition Metering Granularity Hour (default) Click Export CSV to download the usage data.

Open the exported CSV file. The following table describes each column.
Column Description Topic Usage details grouped by topic. Format: <ApsaraMQ for RocketMQ instance ID;Topic name>Send The billed number of messages sent by the topic per hour. See How billed API calls are calculated. Receive The billed number of messages received by the topic per hour. See How billed API calls are calculated. NetworkOut The outbound Internet traffic generated by the topic per hour
Why API call counts differ between bills and the dashboard
The dashboard and the bill count messages differently:
Dashboard: Displays the raw count of messages sent and received. No multipliers are applied.
Bill: Applies multipliers for message size and message type, so the billed count is typically higher than the dashboard count.
How billed API calls are calculated
The billing formula is:
Billed API calls = Messages sent and received x Message size multiplier x Featured message multiplierFor more information about the multipliers and detailed pricing rules, see Billing of message sending and receiving.
Because of these multipliers, the API call count in the bill is often greater than the count shown on the dashboard. This is expected behavior, not a billing error.