Master /detail save problem?

Data Abstract
1

1）master table, primary key:id largeautoinc
detail table: primary key:id largeautioinc
foreign key:billid largeint
relations: masterk table, master fields: id
detail table, detail fields:billid
2) Both RO9.1 and RO9.2 have tried，Save data using applyChangesAsync，There is no problem saving the ANDROID 6 and the following versions, and the external health billid can be updated with the main health ID. There is a problem with ANDROID 7, and billid is a negative number. It can’t be updated normally, ID.
3)The same SCHEMA, the same RELATIONS, under the WIN32 there will be no problem, in ANDROID there will be problems
4）how to solve it?

2

Hello

We need more information to be able to help you. What is the server and client platform used? Is it possible to create a testcase?

Regards

3

Hello, the server for RO9.1 FOR DELPHI developed WIN32 service procedures, the use of INDYHTTPSERVER to provide mobile service.
The client is ANDROID APP.(ANDROID STUDIO)

Also, are there any rules that RELATIONS needs to be aware of, such as whether the name must be capitalized?

4

No, there are no such rules.

Please create a testcase project (simple server app + simple Android app) where this issue reproduces.