Failure : vManage 20.6.5.5 POST/dataservice/template/device/cli

[T.KUBOTA]

vManage 20.3.4.1 POST/dataservice/template/device/cli
API was successful.
We upgraded vManage 20.6.5.5.
After update we can see below response from vManage.
{"error":{"type":"error","message":"Reserved variable","details":"chassis-number is a reserved variable","code":"MTEMP0009"}}

Our shassis-nuｍber is "ISR4331/K9-FDO25530857"
Pls help reason, & what mean "CODE MTEMP0009"?

Thank you for your support.

[bigevilbeard]

If i recall error code "MTEMP0009" indicates there was an issue with a template variable. Further investigation into the vManage release changes could help explain and resolve why this previously working API call is now failing. 

If the change log is not on here https://developer.cisco.com/docs/sdwan/#!sd-wan-vmanage-v20-12 they would you would need to ask TAC why this call is now failing on this newer version, it could be  the newer version enforces stricter rules around reserved template variables.

Hope this helps.