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What is the design principle of SAP CRM Relationship API? I believe many inexperienced people are at a loss about it. Therefore, this paper summarizes the causes and solutions of the problem. Through this article, I hope you can solve this problem.

Unlike settype, there is no dedicated read function module maintained in the relational metadata table. If you are using the read function, use the read function.

The following is a simple explanation of each parameter of FM COM_IL_DB_READ, such as using the read relationship PRDCPN.

# IV_RELTYPE

PRDCPN-relationship name

# IV_ATTR_TYPE

COMT_IL_PRDCPN_ATTR_TYPE-contains relationship specific business data, in this example, the customer product id is stored in field PRID_VENDOR

# IT_LINK_IDENTS

Sourceguid or destiguid contains product guid. This will be used by the generic read API to select against DB table using OPEN SQL.

The exporting parameter:

# ET_INTERLINKAGE-relationship header data-generic data

# ET_IL_ATTR

Relationship specific data, in this example, PRID_VENDOR, stores the detail value.

# Approach2

If we can enhance COM_IL_DB_ reading, then we redirect the data read from the CRM relational storage table to the S4 relational storage table.

Since enhancements to SAPYABA functional modules are not allowed, we must consider CDS view redirection.

Further research is needed here: compare the structure of the storage tables in CRM and S4, and evaluate whether view direct is feasible.

# Approach3

Since we can only make changes on BBPCRM, we must copy the entire implementation in SAP_ABAP listed below into the new functions and subroutines, make the necessary changes (table redirection), and have FORM UI_GETDETAIL call these new implementations. This method requires a great deal of effort.

After reading the above, have you mastered the design principle of SAP CRM Relationship API? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!

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