Hi Lawrence,
you can check two points, it may help you.
- If some how samples are getting finally committed while creating the sample in ECC and making the sample unchangeable, So while you are sending data to ECC they are treating it as already exist.
- you can check if the same sample no is passing by any other inspection lot to ECC for a single flow cycle and if the PK in ECC for the samples are same for all inspection lots (if they have no such identifier) then when ever a sample will be updated to ECC for any of the inspection lot it will commit all the other samples of other inspection lots also.
Regards,
suman