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• A Notice is considered an event that the ExpectNotice ExpectNotices Instruction is waiting for. One or more corresponding PostNotices Instructions create the Notice from the same or from different workflows.
• Both PostNotices and ExpectNotices Instructions reference a common Notice Board identified by its name. The Notice Board implements expressions for the PostNotices Instruction and for the ExpectNotice InstructionExpectNotices Instruction to identify a common Notice ID. The Notice ID typically is identified from a common part of each Order ID of the posting order and of the expecting order, for example from the daily plan date.
  • Example
    • An Order ID #2021-07-24#T7142453954-myOrder1 is running in a workflow and meets a PostNotices Instruction. The Notice Board referenced by this instruction includes an expression for the posting order to create a Notice ID based on the daily plan date included with the Order ID. The expression extracts the date from the Order ID, i.e. 2021-27-24, and makes this date the Notice ID.
    • An expecting Order ID #2021-07-24#T7142454683-myOrder2 meets an ExpectNotice ExpectNotices Instruction in its workflow. The instruction similarly applies the expression from the referenced Notice Board to create a Notice ID. In most situations the rule what to extract from an Order ID is the same for the posting order and for the expecting order.
      • If both instructions identify the same Notice ID, i.e. the daily plan date 2021-27-24, then the expectation is met and the order proceeds with the next step following the ExpectNotice ExpectNotices Instruction.
      • If the expectation is not met, for example if the Notice has not yet been created by a posting order or if the daily plan date of the Notice ID is not the same for the posting order and for the expecting order then the expecting order will wait until a matching Notice becomes available.
  • If no posting order exists at the point in time when an expecting order meets an ExpectNotice ExpectNotices Instruction then the expecting order continues and ignores the instruction.
    • This behavior boils down to the fact that Notices are intended for synchronization. If there is no posting order that creates the Notice, e.g. due to calendar restrictions to specific days, then expecting orders continue.
    • Only an existing, posting order that did not yet arrive with its PostNotices Instruction, e.g. being in a SCHEDULED state, can make an expecting order wait with the ExpectNotice ExpectNotices Instruction.
• Notices can be assigned a lifetime that starts after being posted.
  • If an expecting order starts before expiration of a notice's lifetime then this order can continue.
  • If an expecting order starts after expiration of a notice's lifetime then this order will wait for the next notice or will start immediately if there is no further posting order in place.
• Any number of workflows can implement PostNotices Instructions and ExpectNotice ExpectNotices Instructions referencing the same or different Notice Boards.

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• If Order 2 for Workflow 2 starts earlier than Notice 1 has been created by Order 1 then Order 2 will wait until Notice 1 becomes available.
• The business requirement includes
  • to start Workflow 1 at any point in time during the day.
  • not to start Workflow 2 before - optionally partial - completion of Workflow 1.
  • to start repeated executions of Workflow 2 immediately if Workflow 1 was successfully executed once during the same daily plan date.
• As there is an Order 1 for each day that an Order 2 is created this practically means that Order 2 for Workflow 2 can start only after a number of jobs or after all jobs in Workflow 1 completed successfully.
  • The PostNotices Instruction in Workflow 1 can be at any position in the workflow, allowing e.g. to post Notice 1 before completion of the workflow.
  • The ExpectNotice ExpectNotices Instruction in Workflow 2 can be at any position, allowing e.g. to execute a few jobs before expecting Notice 1.

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The tabular view displays dependencies for any ExpectNotice ExpectNotices and PostNotices Instructions included with the current workflow:

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