Not possible to determine a condition type for the price

What causes this issue?

When it attempted to generate the
<DS:GLOS.3526C06CAFAB52B9E10000009B38F974>time-dependent conditions</>
for the price you entered, the system was unable to determine a
<GL:condition_type>condition type</>. Price determination is therefore
not possible.

How to fix this error?

Contact your system administrator.
The latter can maintain the calculation schema assigned to the
purchasing document using the Implementation Guide (IMG).
<DS:SIMG.SIMG_CFMENUOLMEOMER5>Define calculation schema</>

Error message extract from SAP system. Copyright SAP SE.