"Error 341: Cannot open scratch RDII interface file" message when running storm and Sanitary Analysis for Civil 3D

Autodesk Support

Oct 8, 2023

Products and versions covered

Issue:

After running the Storm and Sanitary Analysis (SSA) model for Civil 3D containing external flow and RDII hydrograph at nodes, the run fails and you receive the following message:

Perform Analysis 

Analysis was unsuccessful. 
Review output report for further details.


After reviewing the report, the "Error 341: Cannot open scratch RDII interface file" message can be seen. 

Solution:

To solve this issue, manually create an RDII file in SSA prior to running the model:
  1. In SSA, Select Analysis > Analysis Options.
  2. In the Write External interface files box in the lower right had corner, select RDII (this will place a check mark on it) > Select the ellipsis button next to the field that appears.
  3. Choose a location to save the file > Give the RDII file a name > Select OK. 
image.png
  1. Press OK in the Analysis Options and Run the model (Press F5). 

Products:

Civil 3D;

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