You can find many sources by simple Google search.
On June 2, 2005,
India and
Ukraine signed the
Framework Agreement between the Government of Ukraine and the Government of the Republic of India on Cooperation in the Peaceful Uses of Outer Space, which would enter in force on February 15, 2006.
[2] This framework was strictly for peaceful applications and specifically specified full compliance with international export control regimes.
In particular, with the Missile Technology Control Regime as India should provide the Ukraine all assurances that any technology transfer would only be used for peaceful purposes. Article 3 of the Framework agreement specifies, among other topics, cooperation on the sphere of production of space transport systems and conducting special scientific researches for assembling, producing, launching, operating and using the launch vehicles, satellites and other space systems.
[3]
On November 2006, within said Framework, a contract was signed for Ukraine to develop a
liquidstaged combustionrocket engine using
kerosene and
liquid oxygen as propellant for
ISRO. The terms of the contract were the transfer of blue prints, since the designer,
Yuzhnoye Design Office lacked the manufacturing capabilities to actually build such an engine. But no engineering analysis methods nor software would be part of the transfer.
And it also stated further restrictions on the contract:only ISRO would be the importer and end user; the engine could only be used for peaceful purposes; it could not be copied, modified, upgraded, re-exporter nor transferred to a third party without the permission of Yuzhnoye and the export control authorities of Ukraine; and the use for military applications was strictly forbidden.
Read the last statement. India need Ukraine approval if you make any modifications.
SCE-200 - Wikipedia, the free encyclopedia