Duplicate production entries 101 using BAPI VHURM_HU_POST_WE_PROD_ORDER

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Hello experts,

We are working with a custom program that posts production confirmations using the BAPI VHURM_HU_POST_WE_PROD_ORDER, which internally calls transaction COWBHUWE to register production goods receipts in EWM, already packed in HUs (Handling Units).

We're encountering the following issue:

❗ Unexpected behavior:

In very rare cases, the system is duplicating the 101 movement for a production order. That is, it creates two separate material documents, each with a different batch number, for the same order.

📌 Observations:

• The duplicated movements occur at exactly the same second, or at most one second apart.
• This suggests a possible concurrency issue or race condition during execution.

⚙️ Technical details:

• In the it_hulist parameter (which specifies how many 101 movements should be posted), we are explicitly passing only one line.
• Despite this, in about 2 out of every 500 production orders, a partial production receipt gets duplicated.

❓ Question:

Has anyone experienced this kind of duplication using the BAPI VHURM_HU_POST_WE_PROD_ORDER or in similar EWM + HU scenarios?
Do you know how we can prevent this unexpected behavior?

Any help or suggestions would be greatly appreciated.