Condition type EK01 missing in pricing procedure A V (error message V1206)

Hi gurus,

We get error message "condition type EK01 missing in pricing procedure A V" when creating a Billing request from a SErvice Order through TX-DP90.

We reviewed customizing regarding this issue:

ODP4 - SD Document linked to condition EK01 (this condition shall bring the actual cost in the order)

ODP1 - Dinamyc item profile to create Billing Request.

Pricing procedure: sales area assignments, condition types (including EK01)

....

but error still shows.

Any idea what additional setting is necessary in customizing so EK01 is transfered to the SD doc in DP90?

Thanks,

VL