IO in Asset not updated in PO after user replaced the IO with a new IO number in Asset Master

[wjk1522]

Good day,

We create an Asset PO in SAP with the wrong Internal Order. The IO in the PO is derived from the IO maintained in the Asset Master A1. The IO field in the account assignment tab of the PO is greyed off.

We realized that the IO number is entered wrongly in the Asset Master A1 and proceed to correct it.

However, this corrected IO was not updated in the PO. We proceed to remove the Asset A1 from the PO via ME22N and enter the same asset number again, but the correct IO was not updated.

Next, we proceed to perform the following steps:

we enter another asset number - A2; the IO was updated to the IO number maintained in asset number A2
we remove Asset A2 and replaced with Asset A1. The IO was finally updated.

My question is this the standard behavior of SAP? We need to perform the above 2 steps in order to update the IO in the PO?

Is there any way to update the IO for Asset in the PO without performing the 2 steps?

The root cause is because of missing configuration or we need to do enhancement for this in order to auto update the IO for asset in the PO?

Thanks.