This message tells you something that is not perfectly known among INFI-90 specialists. Using an AI/I or AI/L reference to import a Station block (FC 80) yields not the OP value, but the PV (process value), the value on Spec 1.
Import information: AI/I Reference on drawing L8102AM-11 imports station PV from Module 21,28,06 Block 1880.
The example tells a story because the error was corrected in one unit but not in its clone. Here we see the two units side by side. On the left is unit 1, where the error was corrected by adding block 9930. On the right is unit 2, which was cloned from unit 1 but the error was never corrected.
Here we see the AI/I references for units 1 and 2. Unit 1 on the left is importing from block 9930. Unit 2 on the right is still importing from S1 of block 1880.
Sometimes it is important to question not only why an error appeared in one unit, but why it didn't in another.
This error can be built directly into Hyperview. For more information, see the article Building error reports into the M14.