QB Issue Resolution:
I believe there is no specific limit for the company file in assigning invoice number. First, I would like you to check on the file if it will detect problems by verifying it. Here’s how:
Go to File >Utilities >Verify Data.
Note: Do not Rebuild the file yet if it detected a problem. Please let me know first if it has a message or error within the process. Thanks a bunch! ☺
Resolution for Issue 'Using SDK, I cannot assign a custom invoice# on a certain company file, while with sample company file, no problem, what could be the problem of the specific file?' available: Yes (Solved).
Source: Intuit Community forum.
Using SDK, I cannot assign a custom invoice# on a certain company file, while with sample company file, no problem, what could be the problem of the specific file?: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.Support for Invoice
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