Error: 'Unable To Save Changes, An Unknown Error Has Occurred' In the Activities Window

(Doc ID 2278463.1)

Last updated on JULY 20, 2017

Applies to:

Primavera P6 Enterprise Project Portfolio Management - Version and later
Information in this document applies to any platform.


When attempting to save changes on the Activities window, the following error occurs.

The issue can be reproduced at will with the following steps:

  1. Login to P6 Web.
  2. Navigate to Administer > Enterprise Data > Global > Currencies.
  3. Change the currency settings by setting the symbols for the Euro from Decimal to Comma and the digit grouping symbol to Period.
  4. Open a project.
  5. Edit the progress of an activity by changing it to anything other than 0% or 100%, i.e. between 1% and 99%.
  6. Press the Save icon.
  7. Observe the reported error.


Sign In with your My Oracle Support account

Don't have a My Oracle Support account? Click to get started

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms