Cannot create kinesis analytics application

Question

While creating Kinesis Analytics application it successfully discovered my schema based on the data. However, when I hit save and continue, I get following error

Error updating application There was an issue updating your application. Error message: 1 validation error detected: Value 'C' at 'input.inputSchema.recordColumns.2.member.name' failed to satisfy constraint: Member must satisfy regular expression pattern: [a-zA-Z][a-zA-Z0-9_]+

my sample record is below

{"reported": {"timestamp": "1482231365", "C": "40", "id": "D_aa-bb"}}

Answer 1

My bad, I overlooked the error message. Found the solution, hope it might help someone.

The auto detected schema name was the issue. From the sample record, the auto detected column name was C and the regex says it should contains atleast two characters. After editing the schema manually with two characters it succeeded.

There was another issue though, the auto detected column name timestamp is a reserved keyword, which we need to change.