we have observed slightly visual differences when compared received PDF and current PDFs.

[Devibala]

OS: MAC

INDESIGN VERSION : InDesign CC 2022

PDF setting : PDF/x-1a:2001

Flatten Transparency:  Yes

Color profile and InDesign version are same,. 

Color seeting: below attached color setting 

While creating a PDF from InDesign CC2022 verison there is visual difference. Please advice  

[leo.r]

First, can you please elaborate: do you mean that you received an existing PDF, then created a new PDF from an InDesign file, and observed visual differences between these two unrelated PDF files? If so, then it's unclear why you would expect those two files to be identical in the first place.

Second, do you have any particular reasons to use InDesign 2022 instead of the current version, InDesign 2025?

[leo.r]

p.s. as evident from your screenshots, the first PDF was created sometime in 2023 from a totally different InDesign file.

[Devibala]

Both PDFs were created using InDesign 2022, Refer attached screenshot for your reference.

1. The PDF we received from the customer was created using InDesign 2022

2. Accordingly, we also used InDesign 2022 to create our version, as the file uses Type 1 fonts, which require compatibility with that version.

[leo.r]

Both PDFs were created using InDesign 2022, Refer attached screenshot for your reference.

1. The PDF we received from the customer was created using InDesign 2022

2. Accordingly, we also used InDesign 2022 to create our version, as the file uses Type 1 fonts, which require compatibility with that version.

By @Devibala

According to the information you supplied, someone created a PDF in 2023. Also, five days ago you created a PDF from a different InDesign file. These are, unsurprisingly, two different PDF files. It's normal that two different PDF files have visual differences (as well as other types of differences).

[Frans v.d. Geest]

The only difference that I can see is file size, is that what you mean? Could be font encoding, OT vs Type 1.