Mapping of same obj different names in name mapping object

I have this problem sometimes, It's most likely the namemapping has a specific number or name which is slightly different everytime, Check the Object in the namemapping and try to use wildcards where applicable:

https://support.smartbear.com/testcomplete/docs/testing-with/object-identification/name-mapping/index.html

https://support.smartbear.com/testcomplete/docs/reference/misc/using-wildcards.html

Exactly what MW_Didata has said. Also it's vital to understand how TestComplete name mapping works - you need to identify the objects using property values, which will be used, to instruct TestComplete on how to locate the objects in your tested application.