The section cannot be divided at the first row of the section

What causes this issue?

In report maintenance you are trying to divide a section.
You have positioned you cursor on the first row of the section.
The section cannot be divided at the first row of the section.

System Response

The section is not divided.

How to fix this error?

Position the cursor on a different row of the section to divide the
section.

Error message extract from SAP system. Copyright SAP SE.