can't add Item as it already exists

[Shell]

The process summary - create quotes (one or more lines), if customer accepts, create one contract header then create contract lines for each item.  Each is a list in SharePoint

I can check if an item exists in the Contract Header list and, if not, create one but as  a number of new quote items can be created at once for the same contract they are clashing at the create item step,  I've tried various conditions, I've added a delay but it delays them all so they still clash. If I could pause them in some way that should work but I've ran out of ideas

Can anyone help?

[Mira_Ghaly]

@Shell

I Am not sure how your flow is structured but if you want the flow to execute sequentially then you need on the setting of your trigger to set the concurrency to 1.

[Shell]

Hi

The trigger is 'When an item is created' in the Quotes list. Can't see an option to set concurrency

[Mira_Ghaly · Accepted solution]

@Shell 

Please check below