3372703 - Different result calculated in KSS2

You run the transaction code KSS2 with same parameters, first time the result is wrong, 

then you run the second time, the result is correct.

Sometimes error message KD301 also happens.

Error message no KD301:

Cost center CTR XX/XX, cost element XX: Tracing factor for splitting is zero.

• SAP S/4HANA 1909

KSS2, KSII, actual cost splitting, KD301, KV165 , KBA , CO-OM-ACT-F , Period-end Closing , Problem