System Error createvent: event time is in past: event time changed to present.

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Kari Payton asked Aug 30 2016 at 5:43 PM fiz commented Jun 28 2024 at 6:45 AM

System Error createvent: event time is in past: event time changed to present.

Any idea what this means? I am getting this error multiple times:

createvent: event time is in past: event time changed to present. Object: Web Molding A_4 advancetime: -0.200925, time: 0.000167 task1

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Answer 1 · 2016-08-30T17:51:40Z

Adrian Haws answered Aug 30 2016 at 5:51 PM fiz commented Jun 28 2024 at 6:45 AM

That means that somehow an event in your model is being created in negative time. This could be delay time, senddelayedmessage(), etc. You will need to look at the Event List at that time to see exactly which event is being created.

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Joerg Vogel commented · Aug 31 2016 at 6:39 AM

you can prevent such errors by the command line max(0, 'any value you compute')

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fiz Joerg Vogel commented · Jun 28 2024 at 6:45 AM

I encounter the same error with the use of statiscal distribution, however how can i use this command as part of the normal stats distribution my initial use one is as follows:

normal(3600, 3, getstream(activity))

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Kari Payton commented · Sep 14 2016 at 3:02 PM

I know this is old, but wanted to update what I found. My delay is a statistical distribution. When I look at the values it creates some of them are negative. Is it the distribution I am using or something else? @Adrian Haws @Jörg Vogel

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Ralf Gruber ♦ Kari Payton commented · Sep 14 2016 at 4:01 PM

Kari,

yes the negative values are contributed to the distribution you choose as well as its parameters. You can look at the profile of the distribution, since FlexSim's standard "Statistical Distribution" pick list option shows you the graph based on 1000 samples.

You can use Joerg's suggestion to cut off the negative portion of the distribution, but you need to be aware, that in this case you are actually not using the original distribution anymore.

Good Luck

Ralf

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Manuel Sinco commented · Jan 17 2020 at 8:25 PM

I'm getting the same error but the Object is a Time Table, so I don't understand why this error happens.

It happens at the moment that it needs to change to Schedule Down.

Thanks!

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tannerp Manuel Sinco commented · Jan 17 2020 at 8:42 PM

Hi @Manuel Sinco,

If this is a question that you need help with, I suggest creating a new question and then referencing this question. That way, you can upload details about your simulation and attach a working model. This comment may not be seen by many FlexSim users. If you have questions about this, please review the Answers Best Practices. Thanks!

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Manuel Sinco tannerp commented · Jan 17 2020 at 8:45 PM

Okay @tanner.p Thanks, I'll upload the question.

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