different custom fields per row in a log file

[willnossiter]

I have a csv log file with four different types of row entries. These are identified by the first item in each line - HR (Header), RR (Request), SR (Send), FS (Footer). Each line has different fields and a different number of fields. I'd like to process these to one index and different custom fields based on the HR/RR/SR/FS value. So far I'm succeeded in processing both lines in the example but the fields are being re-used from the HR row for the RR row. Any ideas?:

Data example (2 lines with carriage return ending the line):

HR, ID123, CredABC1, SoftwareName, StatusActive, 2011-11-15
RR, Conv123, ID123, ID456, 2011-11-15T09:01:15, RequestType1, FailurePoint40, 2011-11-15T09:02:20, ABCD-1234-EFG-567, FailureOnRetry, Error70, RecipientUnavailable, Retried5Times, ABCD-1234-EFG-561

transforms.conf:

[header]
REGEX = HR
DELIMS = ","
FIELDS = "RecordType", "SenderID", "SenderCredentials", "SoftwareInstalled", "ApplicationStatus", "ReportTimePeriod"

[request]
REGEX = RR
DELIMS = ","
FIELDS = "RecordType", "ConversationID", "RequestorID", "SenderID", "RequestTime", "RequestType", "RequestFailurePoint", "RequestFailureTime", "RequestFailureMessageID", "RequestFailureType", "RequestErrorCode", "RequestErrorDescription", "RequestRetryCount", "RequestMessageID"

props.conf

[header]
TIME_PREFIX = ^
REPORT-csv = record
MAX_TIMESTAMP_LOOKAHEAD = 30
TIME_FORMAT= %Y-%m-%d
SEGMENTATION = outer
SHOULD_LINEMERGE = false
LINE_BREAKER = ([\r\n]+)

[request]
TIME_PREFIX = ^
REPORT-csv = record
MAX_TIMESTAMP_LOOKAHEAD = 30
TIME_FORMAT= %Y-%m-%d
SEGMENTATION = outer
SHOULD_LINEMERGE = false
LINE_BREAKER = ([\r\n]+)

inputs.conf

[default]
host = machine_name

[monitor://C:\Inetpub\wwwroot\splunk_logs]
disabled = false
index = main
host = abcd
sourcetype = record

[Takajian]

Typical csv file is static fields, so "DELIMS" setting in transforms.conf is the best way to extract field. But your csv file is not static. so, "DELIMS" setting is not appropriate.
I think you need to extract field by using regex. As for the configuration, we can refer to following manual.

http://docs.splunk.com/Documentation/Splunk/4.2.4/Knowledge/Createandmaintainsearch-timefieldextract...