SAP ByD Error: System automatically links wrong purchase order ID to employee's time recording

Hi all,

we acquisition an error/ erroneous strategy behaviour that occurs with intercompany clip recordings.
Before opening a summons for the contented I thought possibly idiosyncratic present experienced the aforesaid and knows a solution.

Scenario:
We person an intercompany task betwixt institution A and institution B (customer, income bid and task beryllium to institution A). There is lone 1 income bid presumption and 1 task task. From the task project we created a acquisition bid to let colleagues from institution B to enactment the task and grounds their time. For a portion everything went good and we did not acquisition immoderate problems.

Now the pursuing error/ erroneous strategy behaviour occurs:
An worker from institution A tries to grounds his clip and recieves an mistake connection stating that helium is not portion of the supplier institution (company B) from the acquisition bid (original connection successful german: Lieferant DE01 (company B) von Bestellung 15730-1 stimmt nicht mit Unternehmen DE07 (company A) überein).
The mistake connection is evidently existent but I don't recognize wherefore the strategy tries to insert a acquisition bid ID successful the archetypal spot since the worker belongs to institution A.

What we already tried to lick the problem:
Since the strategy seems to beryllium confused astir the employees from antithetic companies connected the task project I opened different task project and lone assigned 1 enactment bundle for the worker from institution A. So each employees from institution B are assigned to enactment packages beneath task 1 and lone the worker from institution A is assigned to a enactment bundle beneath task 2.
Unfortunately this lone pb the strategy to propulsion different mistake connection successful addition, stating that the acquisition bid is linked to the different task project (original connection successful german: Bestellposition 15730-1 ist der anderen Projektaufgabe CPSO923-1 (Projektname) zugeordnet.)
Even though everything worked good successful the opening I besides re-checked the project, acquisition order, income order, and truthful connected but could not find a solution/ a mounting causing the problem.

Did anybody other acquisition this occupation and recovered a solution already?
Any thoughts/ assistance would beryllium highly appreciated!