Hi @GiladanoN,
The APM agents send data to APM server in formats that conform to JSON schemata. For example, the schema for spans is
The schema defines a max length of 1024 for many of the string fields, in order to keep APM index sizes from growing large.
The .NET agent (and I think other agents too) hard limit the size of properties on trace types like Span and Transaction in line with the schema, and add an ellipsis to indicate a value has been truncated. Generally, fields with a max length are not configurable.
Are there particular fields you're using where max length configuration would be useful?