Hello, 
For Finance and Operations, we at our company are using an in-house-made .NET application to insert and update project records through FandO Odata interface. 
Projects insert fine, however we are recently facing some problem related to the update of number Sequence. 
We didn't have this problem before. And this new issue Only happens in Prod environment, not in the Dev environment (i.e. in Dev the number sequence can be updated smoothly). 
But recently, when we want to update the number sequence for Proj_702 (one corresponding to Project ID), we are getting the following error:
Header: error: StatusCode: 400, ReasonPhrase: 'Bad Request'
Contents: 
"error":{
 "code":"","message":"An error has occurred.","innererror":{
 "message":"Write failed for table row of type 'NumberSequenceTableEntity'. Infolog: Error: It is not possible to alter the next value of a number sequence policy via import once that number sequence policy is in use.","type":"Microsoft.Dynamics.Platform.Integration.Services.OData.AxODataWriteException","stacktrace":" at Microsoft.Dynamics.Platform.Integration.Services.OData.Update.UpdateProcessor.UpdateEntity_Save(ChangeOperationContext context, ChangeInfo changeInfo)\r\n at
Please give some advise on how to resolve this. 
Thanks very much,
Kay