After adding "initCrcLength=1048576" this issue got resolved but when sources got overwritten, the unique source count got reduced in search head.
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Sorry - I forgot you have it under a powershell stanza.
If you can't make that work, maybe you can run it under a script stanza where you could use the interval=0 setting
powershell -executionPolicy RemoteSigned -command .$SplunkHome\bin\scripts\metric.ps1
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