How To Fix TR_AUSL144 - Change piece list not modifiable: &1 &2 already filled

SAP Error Message - Details

• Message type: E = Error

• Message class: TR_AUSL - Software Delivery Composer Messages

• Message number: 144

• Message text: Change piece list not modifiable: &1 &2 already filled

What causes this issue?

The delivery request &V2& of type &V1& (for delivery component &V3& of
delivery &V4&) has already been filled.
This means that you cannot create or change the corresponding change
object list, since this has no effect on the existing contents of &V2&
(type &V1&).

System Response

The function terminates.

How to fix this error?

After you have created the contents of the delivery request of type &V1&
, you can no longer change the corresponding change piece list.
If you do need to make more changes to the change piece list, then you
must reset the delivery component (choose <LS>Delivery component</> ->
<LS>Reset</>). You can then change the change piece list and recreate
the delivery request of type &V1& consistently, according to the
modified change piece list.

Error message extract from SAP system. Copyright SAP SE.