Service Notification Document Flow

Hello,

The customer has activities customized for service notification (IW52) and they can create a customer quotation from within IW52. I modified the Z* fm and now it is possible to see a relation between service notification and the customer quotation but the document flow is not updated in service notification. I used the fm BINARY_RELATION_CREATE in order to place a relation and hoped that it would also update the doc. flow but no. Is there a fm to create an entry in service notification document flow?

Thanks and best regards,

Ali