No materials selected

What causes this issue?

Due to the <DS:GLOS.3526B726AFAB52B9E10000009B38F974>costing variant</>
used, no materials could be selected for the cost estimate.

System Response

No materials were selected.

How to fix this error?

First, check that the materials you want to cost exist.
Then go into Customizing and check the costing variant, the reference
variant, and the <DS:GLOS.3526B701AFAB52B9E10000009B38F974>transfer
control</>. If the plant changes, a suitable transfer strategy must be
entered in the transfer control belonging to the reference variant.

Error message extract from SAP system. Copyright SAP SE.