SAP ERP - Gateway Monitor - Gateway Host is loopback ip address

[former_member663378]

Hello All,

We have problem in our SAP Production ERP System which is Distributed system (CI, App01 and App02) gateway, where we are trying to reach Non-SAP system (Mulesoft hosted in cloud).

We have created TCP RFC with Registered Server Program and Program ID "MULEIDOC" , When we try connection test, then it works but it's taking loopback ip address (127.0.0.1) instead of Mulesoft IP address.

Need support in resolving this issue.

Thanks & Regards,

Ananda Swaroop G K

[patelyogesh]

Hello gk021176

Can you please share the error?

Reading throug question I believe SAP Gateway security is not allowing to make connection

Set the parameter gw/acl_mode to 0 (zero) in order to avoid the security control and try again.

If this works please have a look at : RFC Gateway Access Control Lists - Application Server Infrastructure - Community Wiki (sap.com)

Thank you

Yogesh Patel

[former_member663378]

We have received below error message from Mulesoft side, whenever they try to reach our server via program id,

message : CPIC-CALL: SAP CMACCPTP3 on convid:

LOCATION SAP-Gateway on host <SAP Gateway host> / sapgw00

ERROR registration of tp MULEIDOC from host <Mulesoft IP Address> not allowed

TIME wed Aug 18 19:44:14 2021

RELEASE 749

COMPONENT SAP—Gateway

VERSION 720

MODULE /bas/749_REL/src/krn/si /gw/guxxrd.c

LINE 4173

COUNTER 6956

return code: (25) error group: 113

key:RFC_ERROR_REGISTRATION_DENIED

at com.sap.conn.rfc.engine.RfcIoOpenCntl.RfcListen(RfcIoOpenCntl.java.2323)

at com.sap.conn.jco.rt.MiddlewareJavaRfc$JavaRfcServer.listen(MiddlewareJavaRfc.java: 2522) 4 more

[former_member663378]

Thanks, Yogesh,

We are not using reginfo and secinfo, however,

gw/acl_mode value was 1 change it to 0

gw/reg_no_conn_info value was 1 changed it to 0

I used below command to get the RFC connection test working.

nohup rfcexec -a MULEIDOC -g <Server Host Name> -x sapgw00,

However, I read that, It's not good to use rfcexec as this may be having problem while using business functions. Hence, we have killed this process and tested RFC, now it's not working with below error message.

Connection Error

Error when opening an RFC connection (CPIC-CALL: 'ThSAPOCMINIT', communication r

ERROR: program MULEIDOC not registered

LOCATION: SAP-Gateway on host <hostname> / sapgw00

DETAIL: TP MULEIDOC not registered

COMPONENT: SAP-Gateway

COUNTER: 29629

MODULE: /bas/749_REL/src/krn/si/gw/gwr3cpic.c

LINE: 2020

RETURN CODE: 679

SUBRC: 0

RELEASE: 749

TIME: Wed Sep 1 09:27:47 2021

VERSION: 2

Regards,

Ananda Swaroop G K