Infoset based on logical database CRC and customer field wrongly calculated

Hello,

I'm building an info-set (SQ02) based on logical database CRC. My requirement is to calculate a value based on the start date of the capacity allocated to a work center (KAKO-BEGZT).

I defined a customer field (named FIELD1) with data type I, defined in R-KAKO_A with the following coding :

FIELD1 = R-KAKO_A + 100.

After having built the query (SQ01), the field returns correctly the value for FIELD1 only if an interval is defined in the capacity of the work center. Without that, FIELD1 is always null.

Can you help ?

Thank you