Cause why the error message is displayed indicating that an OSN 6800 subrack fails to be deleted from an NE because the subrack has boards installed

10

This is because the subrack still has boards not deleted.
You can delete the subrack after deleting the boards that have been successfully added to the subrack from the subrack on the NMS.
1. For an OSN 8800 T32/T64 subrack, you need to manually delete logical boards except ATE and FAN before deleting the subrack.
2. For an OSN 8800 T16 subrack, you need to manually delete logical boards except EFI, PIU, ATE, FAN, and AUX (in slot 21) before deleting the subrack.
3. For an OSN 6800 subrack, you need to manually delete logical boards except PIU, AUX, FAN, and EFI boards before deleting the subrack.
4. For an OSN 8800 platform subrack, you need to manually delete logical boards except PIU, AUX, FAN, and EFI boards before deleting the subrack.
5. For an OSN 8800 universal platform subrack, you need to manually delete logical boards except FAN and EFI boards before deleting the subrack.

Other related questions:
Whether an ST2 board intended for an OSN 8800 subrack can be installed in an OSN 6800 subrack
An ST2 board intended for OSN 8800 can be used in an OSN 6800 subrack. To use the clock function of an ST2 board, the ST2 board must be inserted to the subrack equipped with clock boards.

Reason why an enhanced OptiX OSN 8800 T32 subrack fails to be created on the NMS and an error message is displayed
Enhanced OptiX OSN 8800 T32 subracks are available since OptiX OSN 8800 V100R006C03. To ensure that an enhanced OptiX OSN 8800 T32 subrack can be created on the NMS, the NE version must be V100R006C03 or later.

Whether TN52SCC boards can be installed in a slave OSN 6800 subrack
Yes, they can.

Cause why a message is displayed indicating that a board is occupied by a cable in an attempt to delete an NE unreachable by the NMS
The correct operations are as follows: Delete the cables on the NE and then delete the NE.

Whether an OptiX OSN 8800 subrack can function as a slave subrack of an OptiX OSN 6800 subrack
Yes, it can function as a slave subrack of an OptiX OSN 6800 subrack.

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