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Support Article

Unable to send SMS despite having Send SMS shape on Offer flow



After running a Campaign, unable to send an SMS despite having a Send SMS shape on the Offer flow.

Error Messages

On the fifth step of SMSMaster activity,

.pyNodeConfiguration(-1) is not valid

Steps to Reproduce

  1. Run a Campaign
  2. Navigate to Agents Management. Check the SendSMSInBulk agent.

Root Cause

A defect or configuration issue in the operating environment.
SendSMSInBulk agent extracted the thread count from the the Decision Strategy Manager (DSM) Simulations topology page. 
The DEFAULT instance record had only eight rows while the environment had 40+ nodes.


Perform the following local-change:
  1. Navigate to Decisioning > Infrastructure > Simulations Settings > Topology page. Verify if all the nodes of the system are displayed in the list.
  2. Click the Save button.

Published February 19, 2019 - Updated December 2, 2021

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