> Source: [sk182903](https://support.checkpoint.com/results/sk/sk182903)

# sk182903 -  Error "An internal error has occurred...Could not access file for write operation" appears when fetching topology on SMB cluster within Smart-1 Cloud R82 

| Property | Value |
|----------|-------|
| Solution ID | sk182903 |
| Date Created | 2024-12-05 |
| Last Modified | 2024-12-08 |
| Technical Level | General |
| Products | Spark Firewall (Locally Managed) |
| Versions | R81.10.X |
| Platform | 400, 1500, 1900, 2000, 1600, 1800 |

## Symptoms

- * When fetching topology on a Quantum Spark (SMB) cluster within the Smart-1 Cloud environment, you see this error in SmartConsole:

  "*Failed to save object cluster_object_name.*
  *Server error is : An internal error has occurred. (Code:0x8003001D, Could not access file for write operation)*

  *Please contact technical support*

  ![](https://sc1.checkpoint.com/sc/SolutionsStatics/NEW_SK_NOID1733425327636/image (6)202412051309061.png)
* When you close the window after seeing the error message above, this new error message appears:

  "*The current changes to object parameters are invalid and therefore will be discarded*"

## Solution

Solution:

* Open the SMB cluster object.

* Go to **Edit Topology** and confirm that the subnet for the MaaS interface is set to `32` or `255.255.255.255`.

  Example MaaS interface subnet: `255.255.255.255`

  ![Example Quantum Spark (SMB) cluster, MaaS interface](https://sc1.checkpoint.com/sc/SolutionsStatics/sk182903/gw-cluster-1202412090916481.png)
* Change the `maas_tunnel` interface subnet to either `255.255.255.0` or `255.255.0.0`.

* Verify that both the cluster members reside on the same network. The network must follow the `100.100.X.X` pattern.

  Example for subnet `255.255.0.0`:

  Cluster member 1 - `100.100.15.14`

  Cluster member 2 - `100.100.16.25`

  ![topology on a Quantum Spark (SMB) cluster within the Smart-1 Cloud environment, mass tunnel, example maas interface subnet](https://sc1.checkpoint.com/sc/SolutionsStatics/sk182903/gw-cluster-2202412090921282.png)
* Push policy.

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