SAP Knowledge Base Article - Public

3635292 - Communication error: 431 error

Symptom

Using high number of filters (for example high number of unique values with "equal to" option) causes the following error message in Data Preview:

Communication error: 431 error

Though when the number of entries in the filter is reduced the Data Preview works fine.

Environment

SAP Datasphere

Reproducing the Issue

E.g.

  1. Open an SQL View (or Graphical View)
  2. Click on the Data Preview button:
  3. Define the Filter criteria by adding in the View settings large number of entries to the Value field (e.g. from Clipboard):

Cause

The data preview feature is designed to give you a quick, insightful glimpse into the structure and appearance of your data, helping you visualize and plan effectively.

To ensure a smooth and responsive experience, it's best to keep filter criteria concise and focused.

If you encounter a message like "Communication error: 431 error" (a shorthand for 431 - Request Header Fields Too Large), it's simply an indicator that the filter details are quite extensive.

Resolution

In such cases, refining or streamlining your criteria can help maintain efficiency and deliver the preview seamlessly.

Use and alternative approach and avoid the usage of a too descriptive filter like the alternative options below:

  • Intervals (between, less than, less than or equal to, greater than, greater than or equal to) or
  • Exclude option

E.g.

See Also

Keywords

Communication*error, 431*error, error*431 , KBA , DS-DI-DM , Data Maintenance , DS-DI-VIW , View Persistency and Runtime , DS-MD-VIW , Views , How To

Product

SAP Datasphere all versions

Attachments

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