Hi @Mhamed Samy 

Check your Zap Runs history details to see the # of Tasks used by a Zap Run.

Help article about how Zap task usage is counted:

https://help.zapier.com/hc/en-us/articles/8496196837261-How-is-usage-measured-in-Zapier

Also, the cost of a Zap Task depends on your Zapier plan.

Check here: https://zapier.com/app/settings/billing

Hi @Troy Tessalone ,

Zap receives 6 task via Webhook

but just one task is successful

because i using filter so just one file can pass from this filter

Each Call = Task

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What does not count toward task usage?
All trigger steps.
Any Filter or Paths step.
All action steps that error or halt.
All steps that do not run, either because a previous filter or path condition was not met or because the Zap errored.
also in:
Formatter
Delay
Looping
Sub-Zap
Digest
Zapier Manager
Storage
Steps for Zapier Tables and Zapier Interfaces.

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How pay-per-task billing works in Zapier?

if you’ve reached your plan’s task limit.
t a rate of x1.25 times your plan's task cost