Job Cost post entries Rejected - Accounting date is invalid

from "Inventroy - Post Inventory Costs to Job Cost" a batch is created to be posted in JobCost.

In "JobCost - Post entries" and selecting the IV batch, it processes the posting. However, the "Job Cost Post Entries Report" shows the line items as "REJECTED - Accouting date is invalid".

When opening the batch from the JobCost-inquiry-new , the line items don't show accounting and transaction dates while in succesful postings in the past those dates were filled in.

What may cause the "missing dates"?