band id "{id}" is already in use; nothing was grouped.

Warnings reference › columns.group.idtaken:*

Identifier

columns.group.idtaken:*

Raised by

The grid (core)

Since

1.47.0

What happened

The id chosen for a new band is already taken, by another band or by a column. The collision is checked before any column is detached, so the tree is untouched and nothing was grouped.

The fix

Choose a free id, or pass groupId to add to the existing band instead of creating one.

Reference

Covered in full at the API reference.