Joined report blocks and common fields
Key Takeaway
Groupings apply across all blocks at once, so you can group a joined report only by common fields.
A joined report shows different types of information side by side in one report. It does this with blocks: each block is its own view of data built from one report type. Common fields are the fields that all the blocks share, and they are what let you group the blocks together.
Blocks and record limits
A joined report holds up to five blocks. Each block shows data from one standard or custom report type, so a single joined report can include data from up to five different report types.
Each block returns up to 2,000 records, so a joined report with five blocks can return up to 10,000 records.