B2B Integration 10.4 | Administering and Monitoring B2B Transactions | webMethods Module for EDI | Optional Inbound Processing When Using Trading Networks | Validating Inbound Control Numbers | Invalid Control Numbers | Out-of-Sequence Control Numbers
 
Out-of-Sequence Control Numbers
An out-of-sequence control number indicates that there might be missing EDI documents; that is, EDI documents that you should have already received have not yet arrived. A control number is also considered out of sequence if it is not numeric.
Generally, Module for EDI considers a control number to be out of sequence if it is greater than the expected control number. For example, the module receives an EDI document with control number 8, but the expected control number is 6, indicating that you did not receive the EDI documents with control numbers 6 and 7.
However, an out-of-sequence control number might be lower than the expected control number as the expected control number approaches the control number maximum. Module for EDI uses the control number window to determine a range of numbers lower than the expected control number that should be considered out-of-sequence, as shown in this example :
Note: Module for EDI maintains only the next expected control number in the EDIControlNumber table, not a list of all previously used control numbers. Because the next expected control number can be manually set, the module might determine that a control number is out of sequence even though a document with the control number has already been received.

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