The dependent sales order &1 could not be adjusted

What causes this issue?

You changed a sales order that has a combined assembly order linked to
it. Because the assembly order is combined, it is linked to other
assembly orders and therefore other sales orders.

System Response

The system cannot update these sales orders.

How to fix this error?

Reschedule the combined order. This will adapt all dependent orders.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.