Hi Alejandro
Perez,
Sorry for
the inconvenienced caused,
It seems there might have been a misunderstanding. Sebastian mentioned in his
previous message that he resolved the issue himself by realizing that he
couldn't add headerTemplate after defining it in columns. So, in a way, he
shared the solution with us.
If you're still encountering a similar issue or require
additional clarification, please refer to the documentation provided below for
further details.
Documentation Link : Headers
in EJ2 JavaScript Grid control | Syncfusion
Please get back to us, if you need further assistance.
Regards,
Johnson Soundararajan S