https://userapps.support.sap.com/sap/support/knowledge/en/3669954
3669954 - Unexpected TKOMK-TAXK1 value leads to incorrect pricing result | SAP Knowledge Base...
It is expected to have a specific value for TKOMK-TAXK1 during pricing for a condition type, however the value for TKOMK-TAXK1 differs from the expected one...