I am quite confused with documentation . is there any restriction to use all modules which used in gateway script of data power  to use in gateway script of Assembly in APIConnect. Please advise on it

Restriction on fs module

https://www.ibm.com/docs/en/datapower-gateway/10.0.x?topic=file-gatewayscript-apis-api-management (referenced from APIC 10.0.x documentation)

No Restriction on module

https://www.ibm.com/docs/en/datapower-gateway/10.5.x?topic=file-gatewayscript-apis-api-management (referenced from APIC 10.0.5.x documentation)

In 10.0.x, which is the 10.0 CD stream, the information might be correct. This CD stream is replaced by the 10.5.0 LTS stream.
- In 10.0.1.x (not cited), the restrictions are fs, mgmt, and policy-utility.
- In 10.5.0.x (and later), the restriction is only policy-utility.

Instead of using the GatewayScript reference, the details (if using DataPower), should be the assembly action configuration. You can change versions to see what DP documents. Because the restrictions are a short list, this detail should be in the API Connect documentation instead of pointing to the DataPower documentation.

Thank you for reply, we are trying to use FS module in Gateway script  policy of API Connect , it is working .